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131 lines
4.8 KiB
Plaintext
131 lines
4.8 KiB
Plaintext
/*!
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\page double_nodes_page Duplicate Nodes or/and Elements
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\n This operation allows to duplicate nodes or/and elements of your mesh.
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Duplication of nodes can be useful to emulate a crack in the model.
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Duplication consists in creation of mesh element "equal" to existing ones.
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<em>To duplicate nodes or/and elements:</em>
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<ol>
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<li>From the \b Modification menu choose \b Transformation -> <b> Duplicate
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Nodes or/and Elements </b> item or click <em>"Duplicate Nodes or/and
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Elements"</em> button in the toolbar.
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<br>
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\image html duplicate_nodes.png "Duplicate Nodes or/and Elements button"
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</li>
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<li>Check in the dialog box one of three radio buttons corresponding to
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the type of duplication operation you would like to perform.</li>
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<li>Fill the other fields available in the dialog box (depending on
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the chosen operation mode).</li>
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<li>Click the \b Apply or <b>Apply and Close</b> button to perform the
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operation of duplication.</li>
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</ol>
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\n "Duplicate Nodes or/and Elements" dialog has three working modes:
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<ul>
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<li>\ref mode_without_elem_anchor "Duplicate nodes only"</li>
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<li>\ref mode_with_elem_anchor "Duplicate nodes and border elements"</li>
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<li>\ref mode_elem_only_anchor "Duplicate elements only"</li>
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</ul>
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<br>
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\anchor mode_without_elem_anchor
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<h2>Duplicate nodes only</h2>
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In this mode the dialog looks like:
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\image html duplicate01.png
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Parameters to be defined in this mode:
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<ul>
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<li><b>Group of nodes to duplicate</b> (<em>mandatory</em>): these
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nodes will be duplicated.</li>
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<li><b>Group of elements to replace nodes with new ones</b>
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(<em>optional</em>): the new nodes will replace the nodes to
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duplicate within these elements.</li>
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<li><b>Construct group with newly created nodes</b> option
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(<em>checked by default</em>): if checked - the group with just
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created nodes will be built.</li>
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</ul>
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A schema below explains the crack emulation using the node duplication.
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\image html crack_emulation_double_nodes.png "Crack emulation"
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This schema shows a virtual crack in a 2D mesh created using this duplication
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mode. In this schema:
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- Black balls are <b>nodes to duplicate</b>.
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- Red balls are <b>new nodes</b>.
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- <b>Elements to replace nodes with new ones</b> are marked with green.
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Note that in reality <b>nodes to duplicate</b> coincide with <b>new nodes</b>.
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<br>
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\anchor mode_with_elem_anchor
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<h2>Duplicate nodes and border elements</h2>
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In this mode the dialog looks like:
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\image html duplicate02.png
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Parameters to be defined in this mode:
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<ul>
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<li><b>Group of elements to duplicate</b> (<em>mandatory</em>): these
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elements will be duplicated.</li>
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<li><b>Group of nodes not to duplicate</b> (<em>optional</em>):
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group of nodes at crack bottom which will not be duplicated.</li>
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<li><b>Group of elements to replace nodes with new ones</b>
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(<em>mandatory</em>): the new nodes will replace the nodes to
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duplicate within these elements.</li>
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<li><b>Construct group with newly created elements</b> option
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(<em>checked by default</em>): if checked - the group of just created
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elements will be built.</li>
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<li><b>Construct group with newly created nodes</b> option
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(<em>checked by default</em>): if checked - the group of just
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created nodes will be built.</li>
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</ul>
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A schema below explains the crack emulation using the node duplication
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with border elements.
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\image html crack_emulation_double_nodes_with_elems.png "Crack emulation"
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This schema shows a virtual crack in a 2D mesh created using this duplication
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mode. In this schema:
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- Black segments are <b>elements to duplicate</b> (edges in 2D case).
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- Black balls (except the lowest one) are nodes of <b>elements to
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duplicate</b> that are duplicated.
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- The lowest black ball is a <b>node not to duplicate</b>.
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- Red balls are <b>creates nodes</b>.
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- Red segments are <b>created elements</b> (edges).
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- <b>Elements to replace nodes with new ones</b> are marked with green.
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Note that in reality <b>nodes to duplicate</b> coincide with <b>new nodes</b>.
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<br>
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In a 3D case, where <b>elements to duplicate</b> are faces, the edges
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located at the "crack" (if any) are cloned automatically.
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<br>
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\anchor mode_elem_only_anchor
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<h2>Duplicate elements only</h2>
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This mode just duplicates given elements, i.e. creates new elements on
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the same nodes as the given elements.
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<br>
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In this mode the dialog looks like:
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\image html duplicate03.png
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Parameters to be defined in this mode:
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<ul>
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<li><b>Group of elements to duplicate</b> (<em>mandatory</em>): these
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elements will be duplicated.</li>
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<li><b>Construct group with newly created elements</b> option
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(<em>checked by default</em>): if checked - the group of just created
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elements will be built. A name of the created group starts from
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"DoubleElements".</li>
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</ul>
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<br><b>See Also</b> a sample TUI Script of a
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\ref tui_duplicate_nodes "Duplicate nodes or/and elements" operation.
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*/
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