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Help Update for version 7.6.0
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@ -5,31 +5,31 @@
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Basic 1D hypothesis specifies:
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<ul>
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<li>how \ref a1d_algos_anchor "Wire Discretization" should divide the edge;</li>
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<li>how \ref a1d_algos_anchor "Composite Side Discretization" should divide the group of C1-continues edges.</li>
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<li>how \ref a1d_algos_anchor "Composite Side Discretization" should divide the group of C1-continuous edges.</li>
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</ul>
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By type of nodes distribution the 1D hypotheses can be categorized as follows:
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1D hypotheses can be categorized by type of nodes distribution as follows:
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<ul>
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<li>Uniform distribution
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<li>Uniform distribution:
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<ul>
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<li>\ref average_length_anchor "Local Length"</li>
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<li>\ref max_length_anchor "Max Size"</li>
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<li>\ref number_of_segments_anchor "Number of segments" with Equidistant distribution</li>
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<li>\ref automatic_length_anchor "Automatic Length"</li>
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</ul></li>
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<li>Constantly increasing or decreasing length of segments
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<li>Constantly increasing or decreasing length of segments:
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<ul>
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<li>\ref arithmetic_1d_anchor "Arithmetic 1D"</li>
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<li>\ref geometric_1d_anchor "Geometric Progression"</li>
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<li>\ref start_and_end_length_anchor "Start and end length"</li>
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<li>\ref number_of_segments_anchor "Number of segments" with Scale distribution</li>
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</ul></li>
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<li>Distribution depending on curvature
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<li>Distribution depending on curvature:
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<ul>
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<li>\ref adaptive_1d_anchor "Adaptive"</li>
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<li>\ref deflection_1d_anchor "Deflection 1D"</li>
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</ul></li>
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<li>Arbitrary distribution
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<li>Arbitrary distribution:
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<ul>
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<li>\ref fixed_points_1d_anchor "Fixed points 1D"</li>
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<li>\ref number_of_segments_anchor "Number of segments" with
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@ -316,7 +316,7 @@ possible to select the edges to be reversed either directly picking them in
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the 3D viewer or selecting the edges or groups of edges in the
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Object Browser.
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\ref reversed_edges_helper_anchor "Helper" group assists you in
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\ref reversed_edges_helper_anchor "Helper" group assists in
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defining <b>Reversed Edges</b> parameter.
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@ -330,23 +330,23 @@ defining <b>Reversed Edges</b> parameter.
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\image html rev_edges_helper_dlg.png
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\b Helper group assists you in defining <b>Reversed Edges</b>
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\b Helper group assists in defining <b>Reversed Edges</b>
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parameter of the hypotheses depending on edge direction.
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<b>Show whole geometry</b> check-box lets you see the whole
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geometrical model in the 3D Viewer. This can help you to understand
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location within the model of a set of edges shown in the Viewer.
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<b>Show whole geometry</b> check-box allows seeing the whole
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geometrical model in the 3D Viewer, which can help to understand the
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location of a set of edges within the model.
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<b>Propagation chains</b> group helps you to define
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<b>Reversed Edges</b> so that opposite edges of quadrilateral faces
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will be split in the logically same direction. When this group is
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<b>Propagation chains</b> group allows defining <b>Reversed Edges</b>
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for splitting opposite edges of quadrilateral faces
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in a logically uniform direction. When this group is
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activated, the list is filled with propagation chains found within the
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model. When you select a chain in the list, edges of the chain are
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shown in the Viewer with arrows so that you can chose a common
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direction for all chain edges. \b Reverse button inverses the common
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direction of chain edges. If \b Add button is active, this means that some
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edges of a chain have different direction and you can click \b Add
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button to add such edges to <b>Reversed Edges</b> list.
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model. When a chain is selected in the list its edges are
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shown in the Viewer with arrows, which enables choosing a common
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direction for all chain edges. \b Reverse button inverts the common
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direction of chain edges. If \b Add button is active, some
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edges of a chain have a different direction, so you can click \b Add
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button to add them to <b>Reversed Edges</b> list.
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\image html propagation_chain.png "The whole geometry and a propagation chain"
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@ -26,9 +26,9 @@ which will compose the mesh of these faces.
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\anchor length_from_edges_anchor
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<h2>Length from Edges</h2>
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<b>Length from edges</b> hypothesis defines maximum linear size of
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mesh faces as an average length of mesh edges approximating a boundary
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of a face being meshed.
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<b>Length from edges</b> hypothesis defines the maximum linear size of
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mesh faces as an average length of mesh edges approximating
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the meshed face boundary.
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<b>See Also</b> a sample TUI Script of a
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\ref tui_length_from_edges "Length from Edges" hypothesis operation.
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@ -113,7 +113,7 @@ of the enforced nodes.
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projected to the meshed face and located close enough to the
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meshed face will be used to create the enforced nodes.</li>
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</ul>
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\note <b>Enforced nodes</b> can't be created at \b Reduced transition type.
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\note <b>Enforced nodes</b> cannot be created at \b Reduced transition type.
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Let us see how the algorithm works:
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<ul>
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@ -26,7 +26,7 @@ about selection filters and their usage in GUI.
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- In Python scripts, filters can be used to choose only some mesh
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entities (nodes or elements) for the operations, which require the
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list of entities as input parameter (create/modify group, remove
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nodes/elements, etc) and for the operations, which accept objects as
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nodes/elements, etc) and for the operations, which accept objects
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as input parameter. The page \ref tui_filters_page provides
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examples of the filters usage in Python scripts.
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*/
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@ -14,17 +14,16 @@ The choice of a hypothesis depends on the selected algorithm.
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Hypotheses are created during creation and edition of
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\ref constructing_meshes_page "meshes" and
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\ref constructing_submeshes_page "sub-mesh".
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Once created a hypotheses can be reused during creation and
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edition of other meshes and sub-meshes. All created hypotheses and
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algorithms are present in the Object Browser in \a Hypotheses and
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\a Algorithms folders correspondingly. From the context menu of the
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hypothesis you can invoke a dialog for modification of its parameters,
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and \b Unassign command that will unassign the hypothesis from all
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the meshes and sub-meshes using it.
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Modification of any hypothesis parameter and unassignment of a
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hypothesis leads to automatic removal of elements generated with use
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of this hypothesis.
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\ref constructing_submeshes_page "sub-meshes".
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Once created a hypotheses can be reused during creation and edition of
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other meshes and sub-meshes. All created hypotheses and algorithms are
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present in the Object Browser in \a Hypotheses and \a Algorithms
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folders correspondingly. It is possible to open a dialog to modify the
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parameters of a hypothesis from its context menu. This menu also
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provides \b Unassign command that will unassign the hypothesis from
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all meshes and sub-meshes using it. Modification of any parameter of a
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hypothesis and its unassignment leads to automatic removal of elements
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generated using it.
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In \b MESH there are the following Basic Hypotheses:
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<ul>
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@ -19,29 +19,29 @@ Mesh module provides several ways to create the mesh:
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Construction of \subpage constructing_submeshes_page "sub-meshes"
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allows to discretize some sub-shapes of the main shape, for example a face,
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using different meshing parameters than other sub-shapes.<br>
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using the meshing parameters that differ from those for other sub-shapes.<br>
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Meshing parameters of meshes and sub-meshes can be
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\subpage editing_meshes_page "edited". (Upon edition only mesh entities
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generated using changed meshing parameters are removed and will be
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re-computed).<br>
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\note Algorithms and hypotheses used at mesh level are referred as
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\a global ones and those used at sub-mesh level are referred as \a
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\note Algorithms and hypotheses used at mesh level are referred to as
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\a global ones and those used at sub-mesh level are referred to as \a
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local ones.
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</li>
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<li>Bottom-up way, using \ref modifying_meshes_page "mesh modification"
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operations, especially \ref extrusion_page "extrusion" and \ref
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revolution_page "revolution". To create an empty mesh not based on
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revolution_page "revolution". To create an empty mesh not based on a
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geometry, use the same dialog as to \ref constructing_meshes_page
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"construct the mesh on geometry" but do not specify any geometry
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nor meshing algorithm.
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"construct the mesh on geometry" but do not specify a geometry
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or a meshing algorithm.
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</li>
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<li>The mesh can be \ref importing_exporting_meshes_page "imported" from
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<li>The mesh can be \subpage importing_exporting_meshes_page "imported" from
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(and exported to) the file in MED, UNV, STL, CGNS, DAT, GMF and
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SAUVE formats.
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</li>
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<li>The 3D mesh can be generated from the 2D mesh, \ref
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importing_exporting_meshes_page "imported" or manually created. To
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setup the meshing parameters of a mesh not based on geometry, just
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setup the meshing parameters of a mesh not based on a geometry, just
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invoke \ref editing_meshes_page "Edit mesh / sub-mesh" command on
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your 3D mesh.
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</li>
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@ -66,29 +66,29 @@ Attractive meshing capabilities include:
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sub-meshes.
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The \b structure of a SALOME mesh is described by nodes and elements based on
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these nodes. Geometry of the element is defined by the sequence of
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these nodes. The geometry of an element is defined by the sequence of
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nodes constituting it and
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the <a href="http://www.code-aster.org/outils/med/html/connectivites.html">
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connectivity convention </a> (adopted from MED library). Definition of
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the element basing on elements of lower dimension is NOT supported.
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the element basing on the elements of a lower dimension is NOT supported.
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\anchor mesh_entities
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The mesh can include the following entities:
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<ul>
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<li>\b Node — an entity of a mesh defining a position in 3D
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<li>\b Node — a mesh entity defining a position in 3D
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space with coordinates (x, y, z).</li>
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<li>\b Edge (or segment) — 1D element of a mesh linking two nodes.</li>
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<li>\b Face — 2D element of a mesh representing a part of
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<li>\b Edge (or segment) — 1D mesh element linking two nodes.</li>
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<li>\b Face — 2D mesh element representing a part of
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surface bound by links between face nodes. A face can be a
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triangle, quadrangle or polygon.</li>
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<li>\b Volume — 3D element of a mesh representing a part of 3D
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<li>\b Volume — 3D mesh element representing a part of 3D
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space bound by volume facets. Nodes of a volume describing each
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facet are defined by
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the <a href="http://www.code-aster.org/outils/med/html/connectivites.html">
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MED connectivity convention.</a> A volume can be a tetrahedron, hexahedron,
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pentahedron, pyramid, hexagonal prism or polyhedron.</li>
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<li>\b 0D element — element of a mesh defined by one node.</li>
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<li>\b Ball element — discrete element of a mesh defined by a
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<li>\b 0D element — mesh element defined by one node.</li>
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<li>\b Ball element — discrete mesh element defined by a
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node and a diameter.</li>
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</ul>
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@ -97,7 +97,7 @@ generated on (if any). The node generated on the geometrical edge or
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surface in addition stores its position in parametric space of the
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associated geometrical entity.
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SALOME supports elements of second order, without central node
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SALOME supports elements of second order, without a central node
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(quadratic triangle, quadrangle, tetrahedron, hexahedron, pentahedron
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and pyramid) and with central nodes (bi-quadratic triangle and
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quadrangle and tri-quadratic hexahedron).<br>
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@ -31,12 +31,13 @@ The following additional hypothesis are available:
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<h2>Propagation of 1D Hypothesis on opposite edges</h2>
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<b>Propagation of 1D Hypothesis on opposite edges</b> allows to mesh
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opposite sides of a quadrangle face, and of other adjacent quadrangles,
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using the same hypothesis assigned to one edge only.<br>
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Thus you define a sub-mesh on an edge where you define 1D meshing
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parameters and a \b Propagation hypothesis. These local meshing
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opposite sides of a quadrangle face and other adjacent quadrangles,
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using the same hypothesis assigned to only one edge.<br>
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Thus you define a sub-mesh on the edge where you define 1D meshing
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parameters and the \b Propagation hypothesis. These local meshing
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parameters will be propagated via opposite sides of quadrangles to the
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whole geometry, or till an edge with other local meshing parameters.
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whole geometry, and this propagation stops at an edge with other local
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meshing parameters.
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This hypothesis can be taken into account by
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\ref a1d_algos_anchor "Wire Discretization" and
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@ -84,17 +85,17 @@ computations.
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<li><b>Stretch factor</b> - defines the growth factor of element height
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from the mesh boundary inwards.</li>
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<li><b>Extrusion method</b> (available in 3D only) - defines how
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position of nodes are found during prism construction and how
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creation of distorted and intersecting prisms is prevented.
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<ul><li><b>Surface offset + smooth</b> method extrudes nodes along normal
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to underlying geometrical surface. Smoothing of internal surface of
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positions of nodes are found during prism construction and how
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the creation of distorted and intersecting prisms is prevented.
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<ul><li><b>Surface offset + smooth</b> method extrudes nodes along the normal
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to the underlying geometrical surface. Smoothing of the internal surface of
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element layers is possible to avoid creation of invalid prisms.</li>
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<li><b>Face offset</b> method extrudes nodes along average normal of
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surrounding mesh faces till intersection with a neighbor mesh face
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translated along its own normal by the layers thickness. Thickness
|
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<li><b>Face offset</b> method extrudes nodes along the average normal of
|
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surrounding mesh faces to the intersection with a neighbor mesh face
|
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translated along its own normal by the thickness of layers. The thickness
|
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of layers can be limited to avoid creation of invalid prisms.</li>
|
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<li><b>Node offset</b> method extrudes nodes along average normal of
|
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surrounding mesh faces by the layers thickness. Thickness of
|
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<li><b>Node offset</b> method extrudes nodes along the average normal of
|
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surrounding mesh faces by the thickness of layers. The thickness of
|
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layers can be limited to avoid creation of invalid prisms.</li>
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\image html viscous_layers_extrusion_method.png "Prisms created by the tree extrusion methods at the same other parameters"
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</ul></li>
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@ -107,9 +108,9 @@ computations.
|
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Faces (or edges) can be selected either in the Object Browser or in
|
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the VTK Viewer.
|
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\note A mesh shown in the 3D Viewer can prevent selection of faces
|
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and edges, just hide the mesh to avoid this. Sometimes a face to
|
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select is hidden by other faces, in this case consider creating a
|
||||
group of faces you want to select in the Geometry module.<br>
|
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and edges, just hide the mesh to avoid this. If a face, which should be
|
||||
selected, is hidden by other faces, consider creating a
|
||||
group of faces to be selected in the Geometry module.<br>
|
||||
To avoid a long wait when a
|
||||
geometry with many faces (or edges) is displayed, the number of faces
|
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(edges) shown at a time is limited by the value of "Sub-shapes
|
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@ -150,12 +151,12 @@ computations.
|
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|
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Quadratic Mesh hypothesis allows to build a quadratic mesh (in which
|
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links between element nodes are not straight but curved lines due to
|
||||
presence of an additional midside node).
|
||||
presence of an additional mid-side node).
|
||||
|
||||
This 1D hypothesis can be taken into account by
|
||||
\ref a1d_algos_anchor "Wire Discretization" and
|
||||
\ref a1d_algos_anchor "Composite Side Discretization" algorithms. To
|
||||
make a quadratic mesh assign this hypothesis at
|
||||
create a quadratic mesh assign this hypothesis at
|
||||
\ref constructing_meshes_page "mesh construction".
|
||||
|
||||
See \ref adding_quadratic_elements_page
|
||||
@ -168,9 +169,13 @@ for more information about quadratic meshes.
|
||||
This additional hypothesis can be used together with 2D triangulation algorithms.
|
||||
It allows 2D triangulation algorithms to build quadrangular meshes.
|
||||
|
||||
When used with "Quadrangle (Mapping)" meshing algorithm, that is obsolete
|
||||
since introducing \ref hypo_quad_params_anchor "Quadrangle parameters"
|
||||
hypothesis, this hypothesis has one restriction on its work: the total quantity of
|
||||
segments on all four sides of the face must be even (divisible by 2).
|
||||
|
||||
Usage of this hypothesis with "Quadrangle (Mapping)" meshing algorithm
|
||||
is obsolete since introducing
|
||||
\ref hypo_quad_params_anchor "Quadrangle parameters" hypothesis.
|
||||
Usage of this hypothesis with "Quadrangle (Mapping)" meshing algorithm
|
||||
corresponds to specifying "Quadrangle Preference" transition type of
|
||||
\ref hypo_quad_params_anchor "Quadrangle parameters" hypothesis.
|
||||
\note "Quadrangle Preference" transition type can be used only if the
|
||||
total quantity of segments on all sides of the face is even (divisible
|
||||
by 2), else "Standard" transition type is used.
|
||||
*/
|
||||
|
||||
@ -7,7 +7,7 @@ used for meshing entities (1D, 2D, 3D sub-shapes) composing
|
||||
geometrical objects.
|
||||
|
||||
An algorithm represents either an implementation of a certain meshing
|
||||
technique or a interface to a whole meshing program generating elements
|
||||
technique or an interface to the whole meshing program generating elements
|
||||
of several dimensions.
|
||||
|
||||
<ul>
|
||||
@ -17,10 +17,10 @@ of several dimensions.
|
||||
<li><em>Wire Discretization</em> meshing algorithm - splits an edge into a
|
||||
number of mesh segments following an 1D hypothesis.
|
||||
</li>
|
||||
<li><em>Composite Side Discretization</em> algorithm - allows to apply an 1D
|
||||
<li><em>Composite Side Discretization</em> algorithm - allows to apply a 1D
|
||||
hypothesis to a whole side of a geometrical face even if it is
|
||||
composed of several edges provided that they form C1 curve and form
|
||||
one side in all faces of the main shape.</li>
|
||||
composed of several edges provided that they form C1 curve in all
|
||||
faces of the main shape.</li>
|
||||
</ul>
|
||||
|
||||
<li>For meshing of 2D entities (<b>faces</b>):</li>
|
||||
|
||||
@ -2,8 +2,8 @@
|
||||
|
||||
\page borders_at_multi_connection_page Borders at multi-connection
|
||||
|
||||
\n This mesh quality control highlights segments according to number
|
||||
of elements, faces and volumes, the segment belongs to.
|
||||
\n This mesh quality control highlights segments according to the number
|
||||
of elements, faces and volumes, to which the segment belongs.
|
||||
|
||||
\image html image151.gif
|
||||
|
||||
|
||||
@ -3,7 +3,7 @@
|
||||
\page borders_at_multi_connection_2d_page Borders at multi-connection 2D
|
||||
|
||||
\n This mesh quality control highlights borders of faces (links
|
||||
between nodes) according to number of faces the link belongs to.
|
||||
between nodes) according to the number of faces, to which the link belongs.
|
||||
|
||||
\image html image127.gif
|
||||
|
||||
|
||||
@ -4,10 +4,10 @@
|
||||
|
||||
\n Compound Mesh is a combination of several meshes. All elements and
|
||||
groups present in input meshes are present in the compound
|
||||
mesh. Neither geometry nor hypotheses of initial meshes are used by
|
||||
the compound mesh. No link between input meshes and a compound mesh is
|
||||
supported, so that modification of an input mesh does not lead to
|
||||
update of the compound mesh.
|
||||
mesh. However, it does not use geometry or hypotheses of the initial meshes.
|
||||
The links between the input meshes and the compound mesh are not
|
||||
supported, consequently the modification of an input mesh does not lead to
|
||||
the update of the compound mesh.
|
||||
|
||||
<em>To Build a compound mesh:</em>
|
||||
|
||||
@ -27,15 +27,16 @@ The following dialog box will appear:
|
||||
<ul>
|
||||
<li>\b Name - allows selecting the name of the resulting \b Compound mesh.</li>
|
||||
<li><b>Meshes, sub-meshes, groups</b> - allows selecting the meshes,
|
||||
sub-meshes and groups which will be concatenated. They can be
|
||||
sub-meshes and groups to be concatenated. They can be
|
||||
chosen in the Object Browser while holding \b Ctrl button.</li>
|
||||
<li><b>Processing identical groups</b> - allows selecting the method
|
||||
of processing the namesake groups existing in the input meshes.
|
||||
They can be either <ul>
|
||||
<li>\b United - all elements of Group1 of Mesh_1 and Group1 of Mesh_2
|
||||
become the elements of Group1 of the Compound_Mesh, or</li>
|
||||
<li>\b Renamed - Group1 of Mesh_1 becomes Group1_1 and Group1 of Mesh_2
|
||||
becomes Group1_2.</li>
|
||||
<li>\b United - all elements of \em Group1 of \em Mesh_1 and \em
|
||||
Group1 of \em Mesh_2 become the elements of \em Group1 of the
|
||||
\em Compound_Mesh, or</li>
|
||||
<li>\b Renamed - \em Group1 of \em Mesh_1 becomes \em Group1_1
|
||||
and \em Group1 of \em Mesh_2 becomes \em Group1_2.</li>
|
||||
</ul>
|
||||
See \ref grouping_elements_page "Creating Groups" for more information
|
||||
about groups.</li>
|
||||
|
||||
@ -28,12 +28,12 @@
|
||||
element will be added to the list. To remove a selected element or
|
||||
elements from the list click the \b Remove button. The \b Sort button
|
||||
allows to sort the list of elements IDs. The <b>Set filter</b> button
|
||||
allows to apply a definite \ref filtering_elements "filter" to
|
||||
allows to apply a definite \ref filtering_elements "filter" to the
|
||||
selection of elements.</li>
|
||||
<li><b>Apply to all</b> radio button allows to modify the orientation
|
||||
of all elements of the selected mesh.</li>
|
||||
<li><b>Select from</b> set of fields allows to choose a sub-mesh or an
|
||||
existing group whose elements then can be added to the list.</li>
|
||||
existing group whose elements can be added to the list.</li>
|
||||
</ul>
|
||||
|
||||
</li>
|
||||
|
||||
@ -2,55 +2,53 @@
|
||||
|
||||
\page constructing_meshes_page Constructing meshes
|
||||
|
||||
To create a mesh on geometry, at first you create a mesh object by choosing
|
||||
To create a mesh on geometry, it is necessary to create a mesh object by choosing
|
||||
- a geometrical shape produced in the Geometry module (<em>main shape</em>);
|
||||
- <em>meshing parameters</em>, including
|
||||
- \ref basic_meshing_algos_page "meshing algorithms" and
|
||||
- \ref about_hypo_page "hypotheses" specifying constraints to be
|
||||
taken into account by chosen meshing algorithms.
|
||||
taken into account by the chosen meshing algorithms.
|
||||
|
||||
Then you already can launch mesh generation by invoking \ref
|
||||
compute_anchor "Compute" command.
|
||||
Then you can launch mesh generation by invoking \ref compute_anchor "Compute" command.
|
||||
|
||||
\note Sometimes \a hypotheses term is used to refer to both algorithms
|
||||
and hypotheses.
|
||||
|
||||
Generation of the mesh on the geometry is performed in the bottom-up
|
||||
Mesh generation on the geometry is performed in the bottom-up
|
||||
flow: nodes on vertices are created first, then edges are divided into
|
||||
segments using nodes on vertices; the segments of the edges is then
|
||||
used while meshing faces; then the mesh of the faces is used while meshing
|
||||
segments using nodes on vertices; the segments of edges are then
|
||||
used to mesh faces; then the mesh of faces is used to mesh
|
||||
solids. This automatically assures the conformity of the mesh.
|
||||
|
||||
You are to choose a meshing algorithm for every dimension of
|
||||
sub-shapes up to the highest dimension you desire to generate. Note
|
||||
that some algorithms generate elements of several dimensions while
|
||||
others, of only one. But it's not necessary to define meshing
|
||||
It is required to choose a meshing algorithm for every dimension of
|
||||
sub-shapes up to the highest dimension to be generated. Note
|
||||
that some algorithms generate elements of several dimensions, and
|
||||
others of only one. It is not necessary to define meshing
|
||||
parameters for all dimensions at once; you can start from 1D
|
||||
meshing parameters only, compute the 1D mesh, then define 2D meshing
|
||||
parameters and compute the 2D mesh (note that 1D mesh won't be
|
||||
parameters and compute the 2D mesh (note that 1D mesh will not be
|
||||
re-computed).
|
||||
|
||||
An algorithm of a certain dimension chosen at mesh creation is applied
|
||||
to discretize every sub-shape of this dimension. But you can
|
||||
to discretize every sub-shape of this dimension. It is possible to
|
||||
specify a different algorithm or hypothesis to be applied to one or
|
||||
a group of sub-shapes by creating a \ref constructing_submeshes_page
|
||||
"sub-mesh". You can specify no algorithms at all at mesh object
|
||||
creation and specify the meshing parameters on sub-meshes only; then
|
||||
only sub-shapes for which you defined an algorithm and a needed
|
||||
hypothesis (if any) will be discretized.
|
||||
only the sub-shapes, for which an algorithm and a hypothesis (if any)
|
||||
have been defined will be discretized.
|
||||
|
||||
\n Construction of a mesh on some geometry includes at least two (mesh
|
||||
\n Construction of a mesh on a geometry includes at least two (mesh
|
||||
creation and computing) of the following steps:
|
||||
<ul>
|
||||
<li> \ref create_mesh_anchor "Creation of a mesh object" where you
|
||||
<li> \ref create_mesh_anchor "Creation of a mesh object", where you
|
||||
can specify meshing parameters to apply to all sub-shapes of the
|
||||
main shape.</li>
|
||||
<li> \ref constructing_submeshes_page "Creation of sub-meshes"
|
||||
(optional) where you can specify meshing parameters to apply to
|
||||
<li> \ref constructing_submeshes_page "Creation of sub-meshes",
|
||||
(optional) where you can specify meshing parameters to apply to the
|
||||
selected sub-shapes.</li>
|
||||
<li> \ref evaluate_anchor "Evaluating mesh size" (optional) can be
|
||||
used to know approximate number of elements before actual generation
|
||||
of them.</li>
|
||||
used to know an approximate number of elements before their actual generation.</li>
|
||||
<li> \ref preview_anchor "Previewing the mesh" (optional) can be
|
||||
used to generate mesh of only lower dimension(s) in order to
|
||||
visually estimate it before full mesh generation, which can be much
|
||||
@ -61,8 +59,8 @@ creation and computing) of the following steps:
|
||||
<li> \ref compute_anchor "Computing the mesh" uses defined meshing
|
||||
parameters to generate mesh elements.</li>
|
||||
<li> \ref edit_anchor "Editing the mesh" (optional) can be used to
|
||||
\ref modifying_meshes_page "modify" mesh of lower dimension before
|
||||
\ref compute_anchor "computing" elements of upper dimension.</li>
|
||||
\ref modifying_meshes_page "modify" the mesh of a lower dimension before
|
||||
\ref compute_anchor "computing" elements of an upper dimension.</li>
|
||||
</ul>
|
||||
|
||||
\anchor create_mesh_anchor
|
||||
@ -103,10 +101,10 @@ creation and computing) of the following steps:
|
||||
3D sub-shapes (solids) and generate 3D mesh elements
|
||||
(tetrahedra, hexahedra etc.)
|
||||
|
||||
As soon as you have selected an algorithm, you can create (or
|
||||
select already created) a hypothesis. A set of accessible
|
||||
hypotheses includes only hypotheses the selected algorithm can take
|
||||
into account.
|
||||
As soon as you have selected an algorithm, you can create a
|
||||
hypothesis (or select an already created one). A set of accessible
|
||||
hypotheses includes only the hypotheses that can be used by the
|
||||
selected algorithm.
|
||||
|
||||
\note
|
||||
- Some page(s) can be disabled if the geometrical
|
||||
@ -115,10 +113,10 @@ creation and computing) of the following steps:
|
||||
\b 3D page is disabled.
|
||||
- Some algorithms affect the geometry of several dimensions,
|
||||
i.e. 1D+2D or 1D+2D+3D. If such an algorithm is selected, the
|
||||
dialog box pages related to the corresponding lower dimensions are
|
||||
dialog pages related to the corresponding lower dimensions are
|
||||
disabled.
|
||||
- \b 0D page does not refer to the 0D elements, but to 0D
|
||||
geometry (vertices). Mesh module does not provide algorithms that
|
||||
- \b 0D page refers to 0D geometry (vertices) rather than
|
||||
to 0D elements. Mesh module does not provide algorithms that
|
||||
produce 0D elements. Currently \b 0D page provides only one
|
||||
algorithm "Segments around vertex" that allows specifying the required
|
||||
size of mesh edges about the selected vertex (or vertices).
|
||||
@ -126,9 +124,9 @@ creation and computing) of the following steps:
|
||||
For example, you need to mesh a 3D object.
|
||||
|
||||
First, you can change a default name of your mesh in the \b Name
|
||||
box. Then check that a selected geometrical object, whose name is
|
||||
shown in \b Geometry field, is that you wish to mesh; if not, click
|
||||
the right object in the Object Browser. Click "Select" button
|
||||
box. Then check that the selected geometrical object indicated in
|
||||
\b Geometry field, is what you wish to mesh; if not, select
|
||||
the correct object in the Object Browser. Click "Select" button
|
||||
near \b Geometry field if the name of the object has not yet
|
||||
appeared in \b Geometry field.
|
||||
<center>
|
||||
@ -224,11 +222,9 @@ creation and computing) of the following steps:
|
||||
</center>
|
||||
|
||||
\note
|
||||
- \a "Automatic" in the names of predefined sets of
|
||||
hypotheses came from previous versions of SALOME where
|
||||
\ref automatic_length_anchor "Automatic Length" hypothesis
|
||||
was included in these sets, and not that these sets are suitable for
|
||||
meshing any geometry.
|
||||
- \a "Automatic" in the names of predefined sets of hypotheses
|
||||
does not actually mean that they are suitable for meshing any
|
||||
geometry.
|
||||
- The list of sets of hypotheses can be shorter than in the
|
||||
above image depending on the geometry dimension.
|
||||
</li>
|
||||
@ -381,18 +377,18 @@ click "Compute" button of the toolbar.
|
||||
|
||||
After the mesh computation finishes, the Mesh Computation information
|
||||
box appears. If you close this box and click "Compute" button again,
|
||||
without previously changing meshing parameters, the mesh is
|
||||
NOT re-computed and the Mesh Computation information box with
|
||||
the same contents is shown. (To fully re-compute the mesh, invoke \ref
|
||||
clear_mesh_anchor "Clear Mesh Data" command before).
|
||||
without previously changing meshing parameters, the mesh will NOT be
|
||||
re-computed and the Mesh Computation information box will be shown
|
||||
with the same contents. (To fully re-compute the mesh, invoke
|
||||
\ref clear_mesh_anchor "Clear Mesh Data" command before).
|
||||
|
||||
In case of a success, the box shows information on number of entities
|
||||
of different types in the mesh.
|
||||
If the mesh computation has been a success, the box shows information
|
||||
on the number of entities of different types in the mesh.
|
||||
|
||||
\image html meshcomputationsucceed.png
|
||||
|
||||
\anchor meshing_failed_anchor
|
||||
If the mesh computation failed, the information about the cause of the
|
||||
If the mesh computation has failed, the information about the cause of the
|
||||
failure is provided in \b Errors table.
|
||||
|
||||
\image html meshcomputationfail.png
|
||||
@ -439,12 +435,12 @@ By default, the information box is always shown after mesh computation operation
|
||||
\anchor edit_anchor
|
||||
<h2>Editing the mesh</h2>
|
||||
|
||||
It is possible to \ref modifying_meshes_page "edit the mesh" of
|
||||
lower dimension before generation of mesh of higher dimension.
|
||||
It is possible to \ref modifying_meshes_page "edit the mesh" of a
|
||||
lower dimension before generation of the mesh of a higher dimension.
|
||||
|
||||
For example you can generate 2D mesh, modify it using e.g.
|
||||
\ref pattern_mapping_page, and then generate 3D mesh basing on the
|
||||
modified 2D mesh. The workflow is following:
|
||||
For example you can generate a 2D mesh, modify it using e.g.
|
||||
\ref pattern_mapping_page, and then generate a 3D mesh basing on the
|
||||
modified 2D mesh. The workflow is as follows:
|
||||
- Define 1D and 2D meshing algorithms.
|
||||
- Compute the mesh. 2D mesh is generated.
|
||||
- Apply \ref pattern_mapping_page.
|
||||
@ -453,9 +449,9 @@ and hypotheses.
|
||||
- Compute the mesh. 3D mesh is generated.
|
||||
|
||||
\note Nodes and elements added \ref adding_nodes_and_elements_page
|
||||
"manually" can't be used in this workflow because the manually created
|
||||
entities are not attached to any geometry and thus (usually) can't be
|
||||
found by a mesher paving some geometry.
|
||||
"manually" cannot be used in this workflow because the manually created
|
||||
entities are not attached to any geometry and thus (usually) cannot be
|
||||
found by the mesher paving a geometry.
|
||||
|
||||
<b>See Also</b> a sample TUI Script demonstrates the possibility of
|
||||
\ref tui_editing_while_meshing "Intermediate edition while meshing"
|
||||
|
||||
@ -11,8 +11,8 @@ and/or hypotheses than those used to generate the mesh on other
|
||||
sub-shapes.
|
||||
|
||||
Creation of a sub-mesh allows to control individually meshing of a
|
||||
certain sub-shape, thus allowing to get mesh locally coarser or finer, to get
|
||||
elements of different types in the same mesh etc.
|
||||
certain sub-shape, thus to get a locally coarser or finer mesh, to get
|
||||
elements of different types in the same mesh, etc.
|
||||
|
||||
A sub-shape to create a sub-mesh on should be retrieved from the main shape
|
||||
in one of the following ways: <ul>
|
||||
@ -33,7 +33,7 @@ compound of solids, starts from searching an algorithm, 1D as for the
|
||||
edge. The following sub-shapes are sequentially checked for presence
|
||||
of a sub-mesh where 1D algorithm is assigned:
|
||||
<ul>
|
||||
<li> the \b edge it-self</li>
|
||||
<li> the \b edge itself</li>
|
||||
<li> <b>groups of edges</b> containing the edge, if any</li>
|
||||
<li> \b wires sharing the edge</li>
|
||||
<li> \b faces sharing the edge</li>
|
||||
@ -43,29 +43,28 @@ of a sub-mesh where 1D algorithm is assigned:
|
||||
<li> <b>groups of solids</b> sharing the edge, if any</li>
|
||||
<li> the <b>main shape</b></li>
|
||||
</ul>
|
||||
(This sequence of sub-shapes defines priority of sub-meshes. Thus more
|
||||
(This sequence of sub-shapes defines the priority of sub-meshes. Thus more
|
||||
local, i.e. assigned to sub-shape of lower dimension, algorithms and
|
||||
hypotheses have higher priority during the search of hypotheses to
|
||||
apply.)
|
||||
|
||||
As soon as an 1D algorithm is found the search stops and the same
|
||||
sequence of sub-shapes is checked to find a main and additional 1D
|
||||
hypotheses the found 1D algorithm can take into account.
|
||||
As soon as a 1D algorithm is found, the search stops and the same
|
||||
sequence of sub-shapes is checked to find the main and additional 1D
|
||||
hypotheses, which can be taken into account by the found 1D algorithm.
|
||||
|
||||
The multi-dimensional algorithms have higher priority than
|
||||
uni-dimensional algorithms if they are assigned to sub-meshes of the
|
||||
The multi-dimensional algorithms have a higher priority than
|
||||
uni-dimensional ones if they are assigned to sub-meshes of the
|
||||
same priority.
|
||||
|
||||
If meshing parameters are defined on sub-meshes of the same priority,
|
||||
for example different 1D hypotheses are assigned to two faces sharing
|
||||
for example, different 1D hypotheses are assigned to two faces sharing
|
||||
an edge, the hypothesis assigned to a sub-shape with a lower ID will
|
||||
be used for meshing. You can \ref submesh_order_anchor "change" mutual
|
||||
priority of such concurrent sub-meshes.
|
||||
|
||||
|
||||
\n Construction of a sub-mesh consists of:
|
||||
<ul>
|
||||
<li>Selecting a mesh which will encapsulate your sub-mesh</li>
|
||||
<li>Selecting a mesh which will encapsulate the sub-mesh</li>
|
||||
<li>Selecting a sub-shape for meshing</li>
|
||||
<li>Applying one or several
|
||||
\ref about_hypo_page "hypotheses" and
|
||||
@ -94,7 +93,7 @@ Geometry (e.g. a face if the parent mesh has been built on box) of the
|
||||
sub-mesh. You can define meshing algorithms and hypotheses in the same way as
|
||||
in \ref constructing_meshes_page "Create mesh" dialog.
|
||||
|
||||
Later you can change applied hypotheses or their parameters in
|
||||
Later you can change the applied hypotheses or their parameters in
|
||||
\ref editing_meshes_page "Edit mesh/sub-mesh" dialog. Mesh entities
|
||||
generated using changed hypotheses are automatically removed.
|
||||
|
||||
|
||||
@ -14,9 +14,9 @@ menu in the Object browser <b>Create Groups from Geometry</b> item.
|
||||
|
||||
\image html create_groups_from_geometry.png
|
||||
|
||||
In this dialog \b Elements group contains a list of shapes to create
|
||||
groups of elements on them; \b Nodes group contains a list of shapes
|
||||
to create groups of node on them.
|
||||
In this dialog \b Elements group contains a list of shapes, on which
|
||||
groups of elements will be created; \b Nodes group contains a list of shapes,
|
||||
on which groups of nodes will be created.
|
||||
|
||||
|
||||
*/
|
||||
|
||||
@ -98,11 +98,11 @@ of a certain type generated on the selected geometrical object. Group
|
||||
contents are dynamically updated if the mesh is modified. The group on
|
||||
geometry can be created only if the mesh is based on geometry.
|
||||
|
||||
To define a group, click a \a Selection button and chose
|
||||
To define a group, click the \a Selection button and choose
|
||||
- <em>Direct geometry selection</em> to select a shape in the Object
|
||||
Browser or in the Viewer;
|
||||
- <em>Find geometry by mesh element selection</em> to activate a
|
||||
dialog which retrieves a shape by a selected element generated on
|
||||
dialog which retrieves a shape by the selected element generated on
|
||||
this shape.
|
||||
|
||||
Note that this choice is available only if the mesh elements are
|
||||
@ -130,8 +130,8 @@ of a certain type satisfying the defined filter. Group contents are
|
||||
dynamically updated if the mesh is modified.
|
||||
|
||||
To define a group, click the <b>Set filter</b> button and define
|
||||
criteria of the filter in the opened dialog. After confirmation of the
|
||||
operation a new group of mesh elements will be created. See more about
|
||||
criteria of the filter in the opened dialog. After the
|
||||
operation is confirmed, a new group of mesh elements will be created. See more about
|
||||
filters on the
|
||||
\ref selection_filter_library_page "Selection filter library" page.
|
||||
|
||||
|
||||
@ -18,7 +18,8 @@ The following dialog box shall appear:
|
||||
\image html diagonalinversion.png
|
||||
|
||||
</li>
|
||||
<li>Enter IDs of nodes forming the required edge in the \b Edge field (the node IDs must be separated by a dash) or select
|
||||
<li>Enter IDs of nodes forming the required edge in the \b Edge field
|
||||
(the node IDs must be separated by dashes) or select
|
||||
this edge in the 3D viewer.</li>
|
||||
<li>Click the \b Apply or <b>Apply and Close</b> button.</li>
|
||||
</ol>
|
||||
|
||||
@ -8,7 +8,7 @@ mesh of plus one dimension are additionally created. All created
|
||||
elements can be automatically grouped. Extrusion can be used to create
|
||||
a \ref extrusion_struct "structured mesh from scratch".
|
||||
|
||||
\image html extrusion_box.png "If you extrude several quadrangles, you get exactly same mesh as if you meshed a geometrical box (except that the initial quadrangles can be incorrectly oriented): quadrangles and segments on boundary of generated mesh are created"
|
||||
\image html extrusion_box.png "If you extrude several quadrangles, you get exactly the same mesh as if you meshed a geometrical box (except for that the initial quadrangles can be incorrectly oriented): quadrangles and segments are created on the boundary of the generated mesh"
|
||||
|
||||
<p>Any node, segment or 2D element can be extruded. Each type of
|
||||
elements is extruded into a corresponding type of result elements:
|
||||
@ -32,15 +32,10 @@ elements is extruded into a corresponding type of result elements:
|
||||
<em>"Extrusion" button</em>
|
||||
</center>
|
||||
|
||||
The following dialog, looking different depending on selected options,
|
||||
will appear:
|
||||
The following dialog will appear:
|
||||
|
||||
\image html extrusionalongaline1.png
|
||||
|
||||
\image html extrusionalongaline2.png
|
||||
|
||||
\image html extrusionalongaline3.png
|
||||
|
||||
</li>
|
||||
|
||||
<li>In this dialog:
|
||||
@ -48,8 +43,8 @@ will appear:
|
||||
<li>Specify \b Nodes, \b Edges and \b Faces, which will be extruded, by one
|
||||
of following means:
|
||||
<ul>
|
||||
<li><b>Select the whole mesh, sub-mesh or group</b> activating this
|
||||
checkbox.</li>
|
||||
<li><b>Select the whole mesh, sub-mesh or group</b> activating the
|
||||
corresponding check-box.</li>
|
||||
<li>Choose mesh elements with the mouse in the 3D Viewer. It is
|
||||
possible to select a whole area with a mouse frame.</li>
|
||||
<li>Input the element IDs directly in <b>Node IDs</b>, <b>Edge
|
||||
@ -63,7 +58,11 @@ will appear:
|
||||
<li>If the <b>Extrusion to Distance</b> radio button is selected
|
||||
- specify the translation vector by which the elements will be extruded.
|
||||
</li>
|
||||
<li>If the <b>Extrusion Along Vector</b> radio button is selected
|
||||
<p><br></p>
|
||||
|
||||
\image html extrusionalongaline2.png
|
||||
|
||||
<li>If the <b>Extrusion Along Vector</b> radio button is selected
|
||||
<ul>
|
||||
<li>specify the coordinates of the \b Vector along which the elements
|
||||
will be extruded, either directly or by selecting the mesh face (the
|
||||
@ -72,19 +71,23 @@ will appear:
|
||||
be negative).</li>
|
||||
</ul>
|
||||
</li>
|
||||
<p><br></p>
|
||||
|
||||
\image html extrusionalongaline3.png
|
||||
|
||||
<li>If the <b>Extrusion By Normal</b> radio button is selected,
|
||||
every node of selected faces is extruded along the \a average
|
||||
every node of the selected faces is extruded along the \a average
|
||||
of the \a normal vectors to the faces sharing the node. (Nodes and
|
||||
edges can't be extruded in this mode.)
|
||||
edges cannot be extruded in this mode.)
|
||||
<ul>
|
||||
<li>Specify the \b Distance of extrusion (it can be negative),</li>
|
||||
<li>Use <b>Along average normal</b> check-box to specify along
|
||||
what vector the distance is measured.
|
||||
which vector the distance is measured.
|
||||
<ul>
|
||||
<li>If it is \a activated the distance is measured along the
|
||||
average normal mentioned above. </li>
|
||||
<li>If it is \a deactivated every node is extruded along the
|
||||
average normal till its intersection with the virtual plane got
|
||||
average normal till its intersection with a virtual plane obtained
|
||||
by translation of the face sharing the node along its own normal
|
||||
by the \b Distance.</li>
|
||||
</ul>
|
||||
@ -95,8 +98,8 @@ will appear:
|
||||
\image html extrusionbynormal_alongavgnorm.png "'Along average normal' activated (to the left) and deactivated (to the right)"
|
||||
<p></li>
|
||||
|
||||
<li>Using <b>Use only input elements</b> check-box specify what
|
||||
elements to use to compute the average normal.<ul>
|
||||
<li><b>Use only input elements</b> check-box specifies what
|
||||
elements will be used to compute the average normal.<ul>
|
||||
<li> If it is \a activated only selected faces, among faces
|
||||
sharing the node, are used to compute the average normal at
|
||||
the node. </li>
|
||||
|
||||
@ -19,12 +19,12 @@ In this dialog box specify <ul>
|
||||
<li>\b All - include if all nodes are common;</li>
|
||||
<li>\b Main - include if all corner nodes are common (meaningful for
|
||||
a quadratic mesh) </li>
|
||||
<li><b>At least one</b> - include if one or more node is common</li>
|
||||
<li>\b Majority - include if half of nodes or more is common</li></ul>
|
||||
<li><b>At least one</b> - include if one or more nodes are common</li>
|
||||
<li>\b Majority - include if half or more nodes are common</li></ul>
|
||||
</li>
|
||||
<li> select reference groups,</li>
|
||||
<li> <b>Include underlying entities only</b> option if activated
|
||||
allows inclusion of an entity provided that it is based on nodes of
|
||||
<li> If <b>Include underlying entities only</b> option is activated
|
||||
an entity can be included if it is based on nodes of
|
||||
one element of a reference group.</li>
|
||||
</ul>
|
||||
|
||||
|
||||
@ -12,35 +12,36 @@ visualization only and is not exported.
|
||||
There are three types of groups different by their internal
|
||||
organization:<ol>
|
||||
<li><b>Standalone group</b> is a static set of mesh entities. Its
|
||||
contents can be explicitely controlled by the user. Upon removal of
|
||||
contents can be explicitly controlled by the user. Upon removal of
|
||||
the entities included into the group, the group becomes empty and
|
||||
the user is to pay efforts to restore its contents. Hence it is
|
||||
resonable to create standalone groups when the mesh generation is
|
||||
its content can be restored only manually. Hence it is
|
||||
reasonable to create standalone groups when the mesh generation is
|
||||
finished and mesh quality is verified.
|
||||
\warning Creation and edition of large standalone groups in
|
||||
\ref creating_groups_page "Create group" dialog using manual edition
|
||||
is problematic due to poor performance of the dialog.</li>
|
||||
<li><b>Group on geomerty</b> is associated to one or a group of
|
||||
|
||||
<li><b>Group on geometry</b> is associated to a sub-shape or a group of
|
||||
sub-shapes of the main shape and includes mesh entities generated on
|
||||
this geometrical entities. The association to geometry is
|
||||
established at group construction and can't be changed. The group
|
||||
contents is always up-to-date without user's efforts, hence the
|
||||
these geometrical entities. The association to a geometry is
|
||||
established at group construction and cannot be changed. The group
|
||||
contents are always updated automatically, hence the
|
||||
group can be created even before mesh elements generation.</li>
|
||||
<li><b>Group on filter</b> encapsulates a filter which is used to
|
||||
<li><b>Group on filter</b> encapsulates a filter, which is used to
|
||||
select mesh entities composing the group from the whole
|
||||
mesh. Criteria of the filter can be changed at any time. The
|
||||
group contents is always up-to-date without user's efforts, hence
|
||||
group contents are always updated automatically, hence
|
||||
the group can be created even before mesh elements generation.</li>
|
||||
</ol>
|
||||
The group on geometry and group on filter can be converted to
|
||||
the standalone group.
|
||||
a standalone group.
|
||||
|
||||
\image html groups_in_OB.png "Groups of different types look differently in the Object Browser"
|
||||
|
||||
The following ways of group creation are possible:
|
||||
|
||||
- \subpage creating_groups_page "Create group" dialog allows creation of
|
||||
a group of any of all the three types:
|
||||
a group of any type:
|
||||
\ref standalone_group "Standalone group",
|
||||
\ref group_on_geom "Group on geometry" and
|
||||
\ref group_on_filter "Group on filter" using dedicated tabs.
|
||||
@ -49,7 +50,7 @@ The following ways of group creation are possible:
|
||||
- Standalone groups of all nodes and elements of the chosen sub-mesh
|
||||
(type of elements depends on dimension of sub-mesh geometry) can
|
||||
be created using <b>Mesh -> Construct Group</b> menu item (available
|
||||
in context menu as well).
|
||||
from the context menu as well).
|
||||
- Standalone groups of any element type can be created basing on nodes
|
||||
of other groups - using \subpage group_of_underlying_elements_page
|
||||
"Group based on nodes of other groups" dialog.
|
||||
@ -69,10 +70,9 @@ The created groups can be later:
|
||||
- \ref importing_exporting_meshes_page "Exported" into a file as a
|
||||
whole mesh.
|
||||
|
||||
In the Object Browser, if groups container item includes more
|
||||
than one group, it is possible to sort the groups by name in
|
||||
ascending order. For this, select the groups container in the Object
|
||||
Browser and choose <b>Sort children</b> context menu item.
|
||||
In the Object Browser, if an item contains more than one child group,
|
||||
it is possible to sort the groups by name in ascending order
|
||||
using <b>Sort children</b> context menu item.
|
||||
|
||||
\image html smesh_sort_groups.png "Sorting groups"
|
||||
|
||||
|
||||
@ -4,8 +4,8 @@
|
||||
|
||||
\n In MESH there is a functionality allowing import/export
|
||||
of meshes from/to \b MED, \b UNV (I-DEAS 10), \b DAT (simple ascii format), \b STL,
|
||||
\b GMF (internal format of DISTENE products, namely BLSurf, GHS3D and
|
||||
Hexotic algorithms) and \b CGNS format files. You can also export a
|
||||
\b GMF (internal format of DISTENE products, namely MG-CADSurf, MG-Tetra and
|
||||
MG-Hexa algorithms) and \b CGNS format files. You can also export a
|
||||
group as a whole mesh.
|
||||
|
||||
|
||||
|
||||
@ -16,10 +16,11 @@
|
||||
either \ref importing_exporting_meshes_page "imported" or manually
|
||||
created);
|
||||
</li>
|
||||
<li>\ref importing_exporting_meshes_page "import and export of meshes in various formats";</li>
|
||||
<li>\ref importing_exporting_meshes_page "importing and exporting meshes in various formats";</li>
|
||||
<li>\subpage modifying_meshes_page "modifying meshes" with a vast
|
||||
array of dedicated operations;</li>
|
||||
<li>\subpage grouping_elements_page "creating groups of mesh elements";</li>
|
||||
<li>\subpage grouping_elements_page "creating groups of mesh
|
||||
elements";</li>
|
||||
<li>filtering mesh entities (nodes or elements) using
|
||||
\subpage filters_page "Filters" functionality for \ref
|
||||
grouping_elements_page "creating groups" and applying \ref
|
||||
@ -27,14 +28,17 @@
|
||||
<li>\subpage viewing_meshes_overview_page "viewing meshes" in
|
||||
the VTK viewer;</li>
|
||||
<li>applying to meshes \subpage quality_page "Quality Controls",
|
||||
allowing to highlight important elements;
|
||||
<li>various \subpage measurements_page "measurements" of the mesh objects.
|
||||
allowing to highlight important elements;</li>
|
||||
<li>taking various \subpage measurements_page "measurements" of the
|
||||
mesh objects.</li>
|
||||
</ul>
|
||||
|
||||
When setting parameters of operations, it is possible to use the variables predefined in
|
||||
\subpage using_notebook_mesh_page "Salome notebook".
|
||||
It is possible to use the variables predefined in
|
||||
\subpage using_notebook_mesh_page "Salome notebook" to set parameters
|
||||
of operations.
|
||||
|
||||
Mesh module preferences are described in the \subpage mesh_preferences_page section of SALOME Mesh Help.
|
||||
Mesh module preferences are described in the \subpage mesh_preferences_page
|
||||
section of SALOME Mesh Help.
|
||||
|
||||
Almost all mesh module functionalities are accessible via
|
||||
\subpage smeshpy_interface_page "Mesh module Python interface".
|
||||
|
||||
@ -37,15 +37,16 @@ object selectable in the dialog box. Two elements are considered coincident if t
|
||||
<li>\b Detect button generates the list of coincident elements found
|
||||
in the selected object.</li>
|
||||
<li><b>Coincident elements</b> is a list of groups of elements for
|
||||
merging. As result of the operation all elements of each group will
|
||||
be replaced by the firts element of the group.
|
||||
merging. After the operation all elements of each group will
|
||||
be united into one element. The first element of a group is kept and
|
||||
the others are removed.
|
||||
<ul>
|
||||
<li>\b Remove button deletes the selected group from the list.</li>
|
||||
<li>\b Add button adds to the list a group of elements selected in the
|
||||
viewer with pressed "Shift" key.</li>
|
||||
<li><b>Select all</b> checkbox selects all groups.</li>
|
||||
<li><b>Show double elements IDs</b> checkbox shows/hides identifiers of
|
||||
elements of selected groups in the 3D viewer.</li>
|
||||
<li><b>Select all</b> check-box selects all groups.</li>
|
||||
<li><b>Show double elements IDs</b> check-box shows/hides identifiers of
|
||||
elements of the selected groups in the 3D viewer.</li>
|
||||
</ul></li>
|
||||
<li><b>Edit selected group</b> list allows editing the selected group:
|
||||
<br><br>
|
||||
@ -53,12 +54,11 @@ object selectable in the dialog box. Two elements are considered coincident if t
|
||||
<center>adds to the group the elements selected in the viewer.</center>
|
||||
<br>
|
||||
\image html remove.png
|
||||
<center>removes from the group the selected elements.</center>
|
||||
<center>removes the selected elements from the group.</center>
|
||||
<br>
|
||||
\image html sort.png
|
||||
<center>moves the selected element to the first position in the
|
||||
group. This means that all other elements of the group will be
|
||||
replaced by this one.</center>
|
||||
group in order to keep it in the mesh.</center>
|
||||
<br>
|
||||
</li>
|
||||
<li>To confirm your choice click \b Apply or <b>Apply and Close</b> button.</li>
|
||||
|
||||
@ -39,14 +39,15 @@ In this mode additional controls are available:
|
||||
<li>\b Detect button generates the list of coincident nodes for the given
|
||||
\b Tolerance.</li>
|
||||
<li><b>Coincident nodes</b> is a list of groups of nodes for
|
||||
merging. As result of the operation all nodes of each group will be
|
||||
replaces by the firts node of the group.
|
||||
merging. After the operation all nodes of each group will
|
||||
be united into one node. The first node of a group is kept and
|
||||
the others are removed.
|
||||
<ul>
|
||||
<li>\b Remove button deletes the selected group from the list.</li>
|
||||
<li>\b Add button adds to the list a group of nodes selected in the
|
||||
viewer with pressed "Shift" key.</li>
|
||||
<li><b>Select all</b> checkbox selects all groups.</li>
|
||||
<li><b>Show double nodes IDs</b> checkbox shows/hides identifiers of
|
||||
<li><b>Select all</b> check-box selects all groups.</li>
|
||||
<li><b>Show double nodes IDs</b> check-box shows/hides identifiers of
|
||||
nodes of selected groups in the 3D viewer.</li>
|
||||
</ul>
|
||||
|
||||
@ -65,15 +66,14 @@ nodes of selected groups in the 3D viewer.</li>
|
||||
<br>
|
||||
\image html sort.png
|
||||
<center>moves the selected node to the first position in the
|
||||
group. This means that all other nodes of the group will be
|
||||
replaced by this one.</center><br>
|
||||
group in order to keep it in the mesh.</center><br>
|
||||
</li>
|
||||
</ul>
|
||||
</li>
|
||||
<li>To confirm your choice click \b Apply or <b>Apply and Close</b> button.</li>
|
||||
</ol>
|
||||
|
||||
\image html merging_nodes1.png "The initial obgect"
|
||||
\image html merging_nodes1.png "The initial object"
|
||||
|
||||
\image html merging_nodes2.png "The object has been merged with a very big tolerance"
|
||||
|
||||
|
||||
@ -44,17 +44,17 @@ or in later sessions with this module according to the preferences.
|
||||
presentation mode as default.
|
||||
|
||||
- <b>Representation of the 2D quadratic elements</b>
|
||||
- <b>Default mode of the 2D quadratic elements</b> combobox - allows
|
||||
- <b>Default mode of the 2D quadratic elements</b> combo-box - allows
|
||||
to select lines or arcs for representation of quadratic elements as default.
|
||||
- <b>Maximum Angle</b> - maximum deviation angle used by the
|
||||
application to build arcs.
|
||||
|
||||
- <b>Mesh export</b>
|
||||
- If you toggle <b>Automatically create groups for MED export</b> checkbox,
|
||||
- If you toggle <b>Automatically create groups for MED export</b> check-box,
|
||||
this operation will be carried out automatically.
|
||||
|
||||
- <b>Mesh computation</b>
|
||||
- <b>Show a computation result notification</b> combobox allows to
|
||||
- <b>Show a computation result notification</b> combo-box allows to
|
||||
select the notification mode about a mesh computation result.
|
||||
There are 3 possible modes:
|
||||
- <b>Never</b> - do not show the result dialog at all;
|
||||
@ -132,16 +132,16 @@ or in later sessions with this module according to the preferences.
|
||||
\image html pref22.png
|
||||
|
||||
- <b>Nodes</b> allows to define default parameters for nodes, which will be applied
|
||||
for a new created mesh only. Customization of already created meshes can be done using
|
||||
\ref colors_size_page "Properties dialog box" that is called by click on popup menu of mesh.
|
||||
for a newly created mesh only. Existing meshes can be customized using
|
||||
\ref colors_size_page "Properties dialog box" available from the context menu of a mesh.
|
||||
- <b>Color</b> - allows to select the color of nodes. Click on the
|
||||
colored line to access to the <b>Select Color</b> dialog box.
|
||||
- <b>Type of marker</b> - allows to define the shape of nodes.
|
||||
- <b>Scale of marker</b> - allows to define the size of nodes.
|
||||
|
||||
- <b>Elements</b> allows to define default parameters for different elements, which will be applied
|
||||
for a new created mesh only. Customization of already created meshes can be done using
|
||||
\ref colors_size_page "Properties dialog box" that is called by click on popup menu of mesh.
|
||||
for a newly created mesh only. Existing meshes can be customized using
|
||||
\ref colors_size_page "Properties dialog box" available from the context menu of a mesh.
|
||||
- <b>Surface color</b> - allows to select the surface color of 2D elements
|
||||
(seen in Shading mode). Click on the colored line to access to the
|
||||
<b>Select Color</b> dialog box.
|
||||
@ -175,21 +175,21 @@ or in later sessions with this module according to the preferences.
|
||||
- <b>Groups</b>
|
||||
- <b>Names color</b> - specifies color of group names to be used in
|
||||
3D viewer.
|
||||
- <b>Default color</b> - specifies default group color, which is used
|
||||
when creating new mesh group (see \ref creating_groups_page "Create Group dialog box").
|
||||
- <b>Default color</b> - specifies the default group color, which is used
|
||||
to create a new mesh group (see \ref creating_groups_page "Create Group dialog box").
|
||||
|
||||
- <b>Numbering</b> allows to define properties of numbering functionality:
|
||||
- <b>Nodes</b> - specifies text properties of nodes numbering
|
||||
(font family, size, attributes, color).
|
||||
- <b>Elements</b> - same for elements.
|
||||
|
||||
- <b>Orientation of Faces</b> - allows to define the behavior of
|
||||
<b>Orientation of faces</b> functionality, which will be applied
|
||||
for a new created mesh only. Customization of already created meshes can be done using
|
||||
\ref colors_size_page "Properties dialog box" that is called by click on popup menu of mesh.
|
||||
- \b Color - allows to define the color of orientation vertors;
|
||||
- <b>Orientation of Faces</b> - allows to define default properties of orientation vectors.
|
||||
These preferences will be applied to the newly created meshes only; properties of existing meshes
|
||||
can be customized using \ref colors_size_page "Properties dialog box"
|
||||
available from the context menu of a mesh.
|
||||
- \b Color - allows to define the color of orientation vectors;
|
||||
- \b Scale - allows to define the size of orientation vectors;
|
||||
- <b>3D Vector</b> checkbox allows to choose between 2D planar
|
||||
- <b>3D Vector</b> check-box allows to choose between 2D planar
|
||||
and 3D vectors.
|
||||
|
||||
<br><h2>Selection Preferences</h2>
|
||||
@ -220,9 +220,9 @@ or in later sessions with this module according to the preferences.
|
||||
\image html pref24.png
|
||||
|
||||
\note The following settings are default and will be applied for
|
||||
a new created mesh only. Customization of already created meshes
|
||||
can be done using local \ref scalar_bar_dlg "Scalar Bar Properties dialog box"
|
||||
that is called by click on popup menu of mesh.
|
||||
a newly created mesh only. Existing meshes
|
||||
can be customized using local \ref scalar_bar_dlg "Scalar Bar Properties dialog box"
|
||||
available from the context menu of a mesh.
|
||||
|
||||
- <b>Font</b> - in this menu you can set type, face and color for
|
||||
the font of <b>Title</b> and <b>Labels</b>.
|
||||
|
||||
@ -58,8 +58,8 @@ transformation operations, giving the possibility to:
|
||||
<li>\subpage cut_mesh_by_plane_page "Cut a tetrahedron mesh by a plane".</li>
|
||||
</ul>
|
||||
|
||||
It is possible to \ref edit_anchor "modify the mesh" of lower
|
||||
dimension before generation of mesh of higher dimension.
|
||||
\note It is possible to \ref edit_anchor "modify the mesh" of a lower
|
||||
dimension before generation of the mesh of a higher dimension.
|
||||
|
||||
<p><br></p>
|
||||
|
||||
|
||||
@ -3,20 +3,20 @@
|
||||
\page quad_ijk_algo_page Quadrangle (Mapping) meshing algorithm
|
||||
|
||||
<b>Quadrangle (Mapping)</b> meshing algorithm is intended for creating
|
||||
all-quadrangle and quad-dominant meshes on faces with no holes and
|
||||
all-quadrangle and quad-dominant meshes on faces without holes and
|
||||
bound by at least three edges.
|
||||
|
||||
The algorithm can create mesh on any face but mesh quality and
|
||||
validity depends on two factors:
|
||||
- face shape (number of edges and concavity of boundary);
|
||||
The algorithm can create mesh on any face but its quality and
|
||||
validity depend on two factors:
|
||||
- face shape (number of edges and boundary concavity);
|
||||
- discretization of edges.
|
||||
|
||||
\image html quad_mesh_invalid.png "Invalid mesh on quadrilateral concave faces"
|
||||
|
||||
The algorithm uses <em>Transfinite Interpolation</em> technic in
|
||||
The algorithm uses <em>Transfinite Interpolation</em> technique in the
|
||||
parametric space of a face to locate nodes inside the face.
|
||||
|
||||
The algorithm treats any face as a quadrangle. If a face is bound by
|
||||
The algorithm treats any face as quadrangle. If a face is bound by
|
||||
more than four edges, four most sharp vertices are considered as
|
||||
corners of the quadrangle and all edges between these vertices are
|
||||
treated as quadrangle sides. In the case of three edges, the vertex
|
||||
@ -26,24 +26,24 @@ quadrangle.
|
||||
\image html quad_meshes.png "Algorithm generates a structured mesh on complex faces provided that edges are properly discretized"
|
||||
|
||||
To get an all-quadrangle mesh you have to carefully define 1D
|
||||
hypotheses on edges of a face. To get a \b structured mesh you have to assure
|
||||
hypotheses on edges of a face. To get a \b structured mesh you have to provide
|
||||
equal number of segments on opposite sides of the quadrangle. If this
|
||||
condition is not respected, the algorithm by default (with no
|
||||
hypothesis) creates \b quad-dominant mesh with triangles located near a
|
||||
side with maximal number of segments. But you can get an
|
||||
condition is not respected, the algorithm by default (without a
|
||||
hypothesis) creates a \b quad-dominant mesh with triangles located near the
|
||||
side with the maximal number of segments. However, you can get an
|
||||
\b all-quadrangle mesh in this case by using
|
||||
\ref hypo_quad_params_anchor "Quadrangle Parameters"
|
||||
hypothesis to specify how to make transition mesh between opposite
|
||||
sides with different number of segments, provided that certain
|
||||
conditions are respected. In any case total number of segments must be
|
||||
even. To use \a Reduced transition method there must be equal number
|
||||
conditions are respected. In any case the total number of segments must be
|
||||
even. To use \a Reduced transition method, there must be an equal number
|
||||
of segments on one pair of opposite sides.
|
||||
|
||||
The following hypotheses help in creation of quadrangle meshes.
|
||||
The following hypotheses help to create quadrangle meshes.
|
||||
- \ref propagation_anchor "Propagation" additional 1D hypotheses
|
||||
help to get equal number of segments on opposite sides of the
|
||||
help to get an equal number of segments on the opposite sides of a
|
||||
quadrilateral face.
|
||||
- \ref a1d_algos_anchor "Composite Side Discretization" algorithm is useful
|
||||
to discretize several C1 continues edges as one quadrangle side.
|
||||
to discretize several C1 continuous edges as one quadrangle side.
|
||||
|
||||
*/
|
||||
|
||||
@ -5,8 +5,8 @@
|
||||
\n This operation allows fixing the orientation of a set of faces in
|
||||
the following ways:
|
||||
<ul>
|
||||
<li>The desired orientation of a set of neighboring faces can be defined
|
||||
by a vector giving a desired direction of a normal of a certain face. <br>
|
||||
<li>The required orientation of a set of neighboring faces can be defined
|
||||
by a vector giving the direction of a normal to a certain face. <br>
|
||||
Since the direction of face normals in the set can be even opposite,
|
||||
it is necessary to specify a \a control face, the normal to which
|
||||
will be compared with the vector. This face can be either:
|
||||
@ -41,7 +41,7 @@ The orientation of a face is changed by reverting the order of its nodes.
|
||||
<li>To reorient by direction of the face normal:
|
||||
<ul>
|
||||
<li>Specify the coordinates of the \b Point by which the control face
|
||||
will be found. You can specify the \b Point by either picking a
|
||||
will be found. You can specify the \b Point by picking a
|
||||
node in the 3D Viewer or selecting a vertex in the Object
|
||||
Browser.</li>
|
||||
<li>Set up the \b Direction vector to be compared with the normal of the
|
||||
@ -61,7 +61,7 @@ The orientation of a face is changed by reverting the order of its nodes.
|
||||
|
||||
</li>
|
||||
|
||||
<li>In the second mode it is possible to either pick the \b Face by mouse in the 3D Viewer or directly input the \b Face ID in the corresponding field.
|
||||
<li>In the second mode it is possible to pick the \b Face by mouse in the 3D Viewer or directly input the \b Face ID in the corresponding field.
|
||||
|
||||
<center>
|
||||
\image html reorient_2d_face.png "The orientation of adjacent faces is chosen according to a vector. The control face is explicitly given."
|
||||
@ -81,7 +81,7 @@ The orientation of a face is changed by reverting the order of its nodes.
|
||||
|
||||
<br>
|
||||
<center>
|
||||
\image html reorient_2d_volume.png "The orientation of faces is chosen with relation to adjacent volumes."
|
||||
\image html reorient_2d_volume.png "The orientation of faces is chosen relatively to adjacent volumes."
|
||||
</center>
|
||||
|
||||
</li>
|
||||
|
||||
@ -33,7 +33,7 @@ The following dialog will appear:
|
||||
of following means:
|
||||
<ul>
|
||||
<li><b>Select the whole mesh, sub-mesh or group</b> activating this
|
||||
checkbox.</li>
|
||||
check-box.</li>
|
||||
<li>Choose mesh elements with the mouse in the 3D Viewer. It is
|
||||
possible to select a whole area with a mouse frame.</li>
|
||||
<li>Input the element IDs directly in <b>Node IDs</b>, <b>Edge
|
||||
@ -46,14 +46,14 @@ The following dialog will appear:
|
||||
</li>
|
||||
<li>Specify the \b Axis of revolution:
|
||||
<ul>
|
||||
<li>Specify the cooordinates of the start \b Point of the
|
||||
<li>Specify the coordinates of the start \b Point of the
|
||||
axis of revolution; either directly or by picking a node
|
||||
in the Viewer (selection of nodes is activated as you click
|
||||
the \a Selection button).</li>
|
||||
<li>Specify the \b Vector of the axis in either of three ways:
|
||||
<ul>
|
||||
<li>directly adjust vector components;</li>
|
||||
<li>click \a Selection button, chose <em>From Origin to
|
||||
<li>click \a Selection button, choose <em>From Origin to
|
||||
selected Point</em> in the opened menu and pick a node
|
||||
in the Viewer; </li>
|
||||
<li>click \a Selection button, chose <em>Normal to
|
||||
|
||||
@ -27,14 +27,14 @@ criteria. The \b Insert button creates a new criterion before the
|
||||
selected criterion. The \b Remove button deletes the selected
|
||||
criterion. The \b Clear button deletes all criteria.
|
||||
\n Each <b>Entity type</b> has its specific list of criteria, however all
|
||||
filters have common syntax. For each criterion you should specify the
|
||||
<b>Threshold Value</b> and for numerical criteria whether we search
|
||||
for the elements that should be \b More, \b Less or \b Equal to this
|
||||
filters have common syntax. The <b>Threshold Value</b> should be specified
|
||||
for most criteria. For numerical criteria it is necessary to indicate if
|
||||
the found elements should be \b More, \b Less or \b Equal to this
|
||||
\b Value. You can also reverse the sense of a criterion using \b Unary
|
||||
operator \a Not and you should specify logical relations between
|
||||
criteria using \b Binary operators \a Or and \a And.
|
||||
\n Some criteria have the additional parameter of \b Tolerance.<br>
|
||||
Switching on <b>Insert filter in viewer</b> checkbox limits
|
||||
Switching on <b>Insert filter in viewer</b> check-box limits
|
||||
selection of elements in the Viewer to the current filter.
|
||||
<br>
|
||||
In the \b Source field you choose if the filter will be applied to
|
||||
@ -72,7 +72,7 @@ algorithm works faster, if this is any other
|
||||
shape, the algorithm works slower.
|
||||
</li><li>
|
||||
<b>Belong to Mesh Group</b> selects entities included into the mesh group
|
||||
defined by <b>Threshold Value</b>.
|
||||
defined by the <b>Threshold Value</b>.
|
||||
</li><li>
|
||||
<b>Range of IDs</b> allows selection of entities with the specified
|
||||
IDs.
|
||||
@ -102,7 +102,7 @@ defined by the <b>Threshold Value</b>. The list of available geometric
|
||||
types depends on the current entity type.
|
||||
</li><li>
|
||||
<b>Entity type</b> allows selection of elements by their type defined
|
||||
as combination of geometry type + number of nodes.
|
||||
as a combination of geometry type and the number of nodes.
|
||||
</li>
|
||||
</ul>
|
||||
|
||||
|
||||
@ -3,8 +3,11 @@
|
||||
\page smoothing_page Smoothing
|
||||
|
||||
\n Smoothing is used to improve quality of 2D mesh by adjusting the
|
||||
locations of element corners (nodes). \note Depending on smoothing
|
||||
method and mesh geometry smoothing can decrease quality of elements.
|
||||
locations of element corners (nodes).
|
||||
|
||||
\note Depending on the chosen method and mesh geometry
|
||||
the smoothing can actually decrease the quality of elements and even
|
||||
make some elements inverted.
|
||||
|
||||
<em>To apply smoothing to the elements of your mesh:</em>
|
||||
<ol>
|
||||
|
||||
@ -64,21 +64,21 @@ possible to select a whole area with a mouse frame; or</li>
|
||||
|
||||
<li>specify the conditions of symmetry operation:
|
||||
<ul>
|
||||
<li>activate <b>Move elements</b> radio button to change location of
|
||||
<li>activate <b>Move elements</b> radio button to change the location of
|
||||
the selected elements within the current mesh;</li>
|
||||
<li>activate <b>Copy elements</b> radio button to duplicate the
|
||||
selected elements at the new location within the current mesh;</li>
|
||||
<li>activate <b>Create as new mesh</b> radio button to create new
|
||||
<li>activate <b>Create as new mesh</b> radio button to create a new
|
||||
element in a new mesh; the new mesh appears in the Object Browser
|
||||
with the default name MeshName_mirrored (it is possible to change
|
||||
with the default name \a MeshName_mirrored (it is possible to change
|
||||
this name in the adjacent box);</li>
|
||||
<li>activate <b> Copy groups </b> checkbox to put new mesh enities
|
||||
into new groups if source entities belongs to some groups. New
|
||||
<li>activate <b> Copy groups </b> check-box to put new mesh entities
|
||||
into new groups if source entities belong to some groups. New
|
||||
groups are named by pattern "<old group name>_mirrored".</li>
|
||||
</ul>
|
||||
</li>
|
||||
</ul>
|
||||
<li>activate <b>Preview</b> checkbox to show the result of
|
||||
<li>activate <b>Preview</b> check-box to show the result of
|
||||
transformation in the viewer;</li>
|
||||
<li>click \b Apply or <b> Apply and Close</b> button to confirm the
|
||||
operation.</li>
|
||||
|
||||
@ -2,7 +2,7 @@
|
||||
|
||||
\page uniting_set_of_triangles_page Uniting a set of triangles
|
||||
|
||||
\n In MESH you can union many neighboring triangles (cells) into
|
||||
\n It is possible to unite many neighboring triangles into
|
||||
quadrangles by deletion of the common edge.
|
||||
|
||||
<em>To union several triangles:</em>
|
||||
@ -10,7 +10,7 @@ quadrangles by deletion of the common edge.
|
||||
<li>Select a mesh (and display it in the 3D Viewer if you are going to
|
||||
pick elements by mouse).</li>
|
||||
<li>In the \b Modification menu select the <b>Union of triangles</b>
|
||||
item or click <em>"Union of triangles"</em> button in the toolbar.
|
||||
item or click <em>"Union of triangles"</em> button in the tool-bar.
|
||||
|
||||
\image html image80.png
|
||||
<center><em>"Union of triangles" button</em></center>
|
||||
|
||||
@ -2,14 +2,14 @@
|
||||
|
||||
\page uniting_two_triangles_page Uniting two triangles
|
||||
|
||||
\n In MESH you can union two neighboring triangles (cells) by deletion
|
||||
\n In MESH you can union two neighboring triangles by deletion
|
||||
of the common edge.
|
||||
|
||||
<em>To unite two triangles:</em>
|
||||
<ol>
|
||||
<li>From the \b Modification menu choose the <b>Union of two
|
||||
triangles</b> item or click <em>"Union of two triangles"</em> button
|
||||
in the toolbar.
|
||||
in the tool-bar.
|
||||
|
||||
\image html image71.png
|
||||
<center><em>"Union of two triangles" button</em></center>
|
||||
@ -20,7 +20,7 @@ The following dialog box shall appear:
|
||||
|
||||
</li>
|
||||
<li>Enter IDs of nodes forming the required edge in the \b Edge field
|
||||
(the node IDs must be separated by a dash) or select this edge in
|
||||
(a couple of node IDs separated by a dash) or select this edge in
|
||||
the 3D viewer.</li>
|
||||
<li>Click the \b Apply or <b>Apply and Close</b> button.</li>
|
||||
</ol>
|
||||
|
||||
Loading…
Reference in New Issue
Block a user