Nerge with PAL/SALOME 2.1.0d

This commit is contained in:
admin 2004-11-24 10:58:03 +00:00
parent 0febe018bc
commit 5ce23baf3a
300 changed files with 13188 additions and 3444 deletions

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@ -127,6 +127,7 @@ whskin_frmset01.htm
smesh_hha.hhk
smesh.hhc
smesh.hhk
extrusion.htm
files\1d_meshing_algorithm.htm
files\2d_(quadrangle)_meshing_algorithm.htm
files\2d_meshing_algorithm.htm
@ -143,13 +144,17 @@ files\aspect_ratio.htm
files\changing_orientation_of_elements.htm
files\computing_meshes.htm
files\connectivity.htm
files\constructing_groups_of_specific_elements.htm
files\constructing_meshes.htm
files\constructing_submeshes.htm
files\creating_groups.htm
files\cutting_quadrangles.htm
files\deflection_1d.htm
files\diagonal_iversion_of_elements.htm
files\displacing_nodes.htm
files\displaying_elements_numbers.htm
files\displaying_nodes_numbers.htm
files\editing_groups.htm
files\editing_hypotheses.htm
files\importing_and_exporting_meshes.htm
files\introduction_to_smesh.htm
@ -158,20 +163,31 @@ files\length_of_edges.htm
files\local_length_hypothesis.htm
files\max._element_area_hypothesis.htm
files\max._element_volume_hypothsis.htm
files\merging_nodes.htm
files\minimum_angle.htm
files\non_conform_mesh_allowed_hypothesis.htm
files\number_of_segments_hypothesis.htm
files\propagation_of_1d_hypothesis_on_opposite_edges.htm
files\reassigning_hypotheses_and_algorithms.htm
files\removing_nodes_and_elements.htm
files\renumbering_nodes_and_elements.htm
files\rotation.htm
files\running_smesh_module.htm
files\scalar_bar_properties.htm
files\sewing_meshes.htm
files\shading.htm
files\shrink.htm
files\skew.htm
files\smoothing.htm
files\start_and_end_length_hypothesis.htm
files\symmetry.htm
files\taper.htm
files\tetrahedron_(ghs3d)_meshing_algorithm.htm
files\tetrahedron_(netgen)_meshing_algorithm.htm
files\translation.htm
files\uniting_a_set_of_triangles.htm
files\uniting_two_triangles.htm
files\using_operations_on_groups.htm
files\using_smesh_module.htm
files\view_update.htm
files\viewing_mesh_info.htm
@ -179,69 +195,149 @@ files\visualization_modes.htm
files\visualization_properties.htm
files\warp.htm
files\wireframe.htm
tetrahedron_(ghs3d)_meshing_algorithm.htm
pattern_mapping.htm
revolution.htm
ehlpdhtm.js
texture_horiz_ltbluebubbles.jpg
smesh.glo
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smesh.ppf
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whdata\whtdata0.xml
@ -265,6 +361,7 @@ whgdata\whlstt9.htm
whgdata\whlstt10.htm
whgdata\whlstt11.htm
whgdata\whlstt12.htm
whgdata\whlstt13.htm
whgdata\whlsti0.htm
whgdata\whlstfl0.htm
whgdata\whlstfl1.htm
@ -289,11 +386,15 @@ whgdata\whlstfl19.htm
whgdata\whlstfl20.htm
whgdata\whlstfl21.htm
whgdata\whlstfl22.htm
whgdata\whlstfl23.htm
whgdata\whlstf0.htm
whgdata\whlstf1.htm
whgdata\whlstf2.htm
whgdata\whlstf3.htm
whgdata\whlstf4.htm
whgdata\whlstf5.htm
whgdata\whlstf6.htm
whgdata\whlstf7.htm
whgdata\whlstg0.htm
smesh.htm
smesh_csh.htm

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@ -0,0 +1,184 @@
<!doctype HTML public "-//W3C//DTD HTML 4.0 Frameset//EN">
<html>
<!--(==============================================================)-->
<!--(Document created with RoboEditor. )============================-->
<!--(==============================================================)-->
<head>
<title>Extrusion</title>
<!--(Meta)==========================================================-->
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<h1>Extrusion</h1>
<p>Extrusion is a type of surface meshing by generation from discretized
lines. It is used to build mesh elements of plus one dimension than the
swept ones. Each swept 1D element produces one or more quadrangles (or
triangles if one node of a rotated element lays on the revolution axis).</p>
<p>&nbsp;</p>
<p class=TODO>To use extrusion:</p>
<p class=TODO>&nbsp;</p>
<p class="whs1">1. From the <span style="font-weight: bold;"><B>Modification
</B></span>menu choose the <span style="font-weight: bold;"><B>Extrusion </B></span>item
or click <img src="image91.gif" width="27px" height="24px" border="0" class="img_whs2"> button in the toolbar. The following dialog box
shall appear:</p>
<p class="whs1">&nbsp;</p>
<p class="whs1"><img src="image90.gif" width="523px" height="307px" border="0" class="img_whs3"></p>
<p class="whs1">&nbsp;</p>
<p class="whs1">2. In this dialog box you should select </p>
<ul type="disc" class="whs4">
<li class=kadov-p><p class="whs1">the type of elements
which will be extruded (1D or 2D),</p></li>
<li class=kadov-p><p class="whs1">specify the IDs of
the elements which will be extruded by selecting them in the 3D viewer
or select the whole mesh or submesh,</p></li>
<li class=kadov-p><p class="whs1">specify the vector
along which the elements will be extruded,</p></li>
<li class=kadov-p><p class="whs1">number of steps</p></li>
</ul>
<p class="whs1">&nbsp;</p>
<p class="whs1">3. Click the <span style="font-weight: bold;"><B>Apply
</B></span>or <span style="font-weight: bold;"><B>OK </B></span>button.</p>
<p class=TODO
style="margin-left: 40px;">&nbsp;</p>
<p>&nbsp;</p>
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<p><img src="image76.jpg" width="350px" height="201px" border="0" class="img_whs9"></td></tr>
</table>
<p class=TODO>&nbsp;</p>
<p class=TODO>&nbsp;</p>
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@ -19,8 +19,8 @@
<meta name=filetype content=kadov>
<meta name=filetype-version content=1>
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<meta name=layout-width content=547>
<meta name=layout-height content=460>
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@ -36,7 +36,6 @@ if (navigator.appName !="Netscape")
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@ -111,10 +110,9 @@ else
<p class=TODO>&nbsp;</p>
<p class="whs2">From the <span style="font-weight: bold;"><B>Hypotheses
</B></span>menu select <span style="font-weight: bold;"><B>Create Algorithms
&gt;</B></span> <img src="../image16.gif" width="22px" height="22px" border="0" class="img_whs3"> <span style="font-weight: bold;"><B>Wire discretization
</B></span>and click <span style="font-weight: bold;"><B>Create</B></span>.</p>
<p class="whs2"><a href="about_meshing_algorithms.htm#ApplyAlgo">In
the <span style="font-weight: bold;"><B>Create Algorithms </B></span>dialog box</a>
select this algorithm and click <span style="font-weight: bold;"><B>Create</B></span>.</p>
<script type="text/javascript" language="javascript1.2">
<!--

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@ -19,8 +19,8 @@
<meta name=filetype content=kadov>
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@ -36,7 +36,6 @@ if (navigator.appName !="Netscape")
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@ -111,9 +110,9 @@ else
<p class=TODO>&nbsp;</p>
<p class="whs2">From the <span style="font-weight: bold;"><B>Hypotheses
</B></span>menu select <span style="font-weight: bold;"><B>Create Algorithms
&gt; <img src="../image14.gif" width="22px" height="21px" border="0" class="img_whs3"> Quadrangle (Mapping) </B></span>and click <span style="font-weight: bold;"><B>Create</B></span>.</p>
<p class="whs2"><a href="about_meshing_algorithms.htm#ApplyAlgo">In
the <span style="font-weight: bold;"><B>Create Algorithms </B></span>dialog box</a>
select this algorithm and click <span style="font-weight: bold;"><B>Create</B></span>.</p>
<script type="text/javascript" language="javascript1.2">
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@ -19,8 +19,8 @@
<meta name=filetype content=kadov>
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@ -36,7 +36,6 @@ if (navigator.appName !="Netscape")
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p.whs2 {margin-left: 40px;}
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@ -111,10 +110,9 @@ else
<p class=TODO>&nbsp;</p>
<p class="whs2">From the <span style="font-weight: bold;"><B>Hypotheses
</B></span>menu select <span style="font-weight: bold;"><B>Create Algorithms
&gt;</B></span> <img src="../image15.gif" width="22px" height="22px" border="0" class="img_whs3"> <span style="font-weight: bold;"><B>Triangle
(Mefisto) </B></span>and click <span style="font-weight: bold;"><B>Create</B></span>.</p>
<p class="whs2"><a href="about_meshing_algorithms.htm#ApplyAlgo">In
the <span style="font-weight: bold;"><B>Create Algorithms </B></span>dialog box</a>
select this algorithm and click <span style="font-weight: bold;"><B>Create</B></span>.</p>
<script type="text/javascript" language="javascript1.2">
<!--

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@ -19,8 +19,8 @@
<meta name=filetype content=kadov>
<meta name=filetype-version content=1>
<meta name=page-count content=1>
<meta name=layout-height content=397>
<meta name=layout-width content=547>
<meta name=layout-height content=460>
<meta name=layout-width content=740>
<!--(Links)=========================================================-->
@ -36,7 +36,6 @@ if (navigator.appName !="Netscape")
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<script type="text/javascript" language="JavaScript" title="WebHelpInlineScript">
@ -111,11 +110,9 @@ else
<p class=TODO>&nbsp;</p>
<p class="whs2">From the <span style="font-weight: bold;"><B>Hypotheses
</B></span>menu select <span style="font-weight: bold;"><B>Create Algorithms
&gt;</B></span> <img src="../image13.gif" width="23px" height="21px" border="0" class="img_whs3"> <span style="font-weight: bold;"><B>Hexahedron
(i,j,k) &nbsp;</B></span>and
click <span style="font-weight: bold;"><B>Create</B></span>.</p>
<p class="whs2"><a href="about_meshing_algorithms.htm#ApplyAlgo">In
the <span style="font-weight: bold;"><B>Create Algorithms </B></span>dialog box</a>
select this algorithm and click <span style="font-weight: bold;"><B>Create</B></span>.</p>
<script type="text/javascript" language="javascript1.2">
<!--

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@ -19,8 +19,8 @@
<meta name=filetype content=kadov>
<meta name=filetype-version content=1>
<meta name=page-count content=1>
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<meta name=layout-width content=473>
<meta name=layout-height content=1305>
<meta name=layout-width content=740>
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@ -37,9 +37,12 @@ if (navigator.appName !="Netscape")
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@ -156,7 +159,7 @@ else
meshing of <span style="font-weight: bold;"><B>faces</B></span>: </p></li>
</ul>
<ul type="disc" class="whs2">
<ol type="disc" class="whs4">
<ul type="disc" class="whs2">
@ -166,7 +169,7 @@ else
<li class=kadov-p><p class="whs3"><a href="non_conform_mesh_allowed_hypothesis.htm">Non conform mesh allowed</a></p></li>
</ul>
</ul>
</ol>
<ul type="disc" class="whs2">
@ -200,23 +203,36 @@ else
<p>&nbsp;</p>
<p class="whs4">To create a hypothesis
</p>
<p class="whs5"><a name=CreateHyp></a>To
create a hypothesis </p>
<p><span style="font-size: 12pt;"><font size=3 style="font-size:12pt;">In the main menu select</font></span><span style="font-style: italic;
font-size: 12pt;
font-family: 'Arial Black', sans-serif;"> <font size=3 style="font-size:12pt;"><I></I></font></span><span style="font-weight: bold;"><B>Hypotheses
&gt; </B></span><img src="../image7.gif" width="22px" height="22px" border="0" class="img_whs5"> <span style="font-weight: bold;"><B>Create hypotheses</B></span></p>
&gt; </B></span><img src="../image7.gif" width="22px" height="22px" border="0" class="img_whs6"> <span style="font-weight: bold;"><B>Create hypotheses</B></span></p>
<p>The following menu will appear:</p>
<p>&nbsp;</p>
<p><img src="../image21.jpg" width="448px" height="367px" border="0" class="img_whs6"></p>
<p class="whs7"><img src="../image21.jpg" width="448px" height="367px" border="0" class="img_whs8"></p>
<p>&nbsp;</p>
<p>Select one of the menu items and click <span style="font-weight: bold;"><B>Create</B></span>.</p>
<p>Select one of the menu items and click <span style="font-weight: bold;"><B>Create</B></span>.
A data input dialog box corresponding to the chosen type of the hypotheses
will appear. The created hypotheses shall appear in the Object Browser
under the <span style="font-weight: bold;"><B>Hypotheses </B></span>folder:</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p class="whs7"><img src="../image42.jpg" width="271px" height="124px" border="0" class="img_whs9"></p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<script type="text/javascript" language="javascript1.2">
<!--

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<li class=kadov-p><p>create your own meshes using the SMESH functions
destined for modification of generated meshes. More about this functionality
of SMESH <a href="about_modification_of_meshes.htm">see here</a>. </p></li>
of SMESH see in the chapter "Modifying meshes". </p></li>
</ul>
<p>&nbsp;</p>

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<script type="text/javascript" language="JavaScript" title="WebHelpInlineScript">
@ -118,7 +119,7 @@ else
<p>&nbsp;</p>
<ol type="disc" class="whs3">
<ul type="disc" class="whs2">
<ul type="disc" class="whs2">
@ -127,7 +128,7 @@ else
class=kadov-p><p><a href="1d_meshing_algorithm.htm">Wire discretization
meshing algorithm</a></p></li>
</ul>
</ol>
</ul>
<p>&nbsp;</p>
@ -138,9 +139,9 @@ else
<p>&nbsp;</p>
<ol type="disc" class="whs3">
<ul type="disc" class="whs2">
<ul type="circle" class="whs4">
<ul type="circle" class="whs3">
<li class=kadov-p><p><a href="2d_meshing_algorithm.htm">Triangle
meshing algorithm</a></p></li>
@ -148,7 +149,7 @@ else
<li class=kadov-p><p><a href="2d_(quadrangle)_meshing_algorithm.htm">Quadrangle
meshing algorithm</a></p></li>
</ul>
</ol>
</ul>
<p>&nbsp;</p>
@ -160,9 +161,9 @@ else
<p>&nbsp;</p>
<ol type="disc" class="whs3">
<ul type="disc" class="whs2">
<ul type="circle" class="whs4">
<ul type="circle" class="whs3">
<li class=kadov-p><p><a href="3d_meshing_algorithm.htm">Hexahedron
meshing algorithm</a></p></li>
@ -170,29 +171,35 @@ else
<li class=kadov-p><p><a href="tetrahedron_(netgen)_meshing_algorithm.htm">Tetrahedron
meshing algorithm</a></p></li>
</ul>
</ol>
</ul>
<p>&nbsp;</p>
<p class="whs5"><span style="font-style: italic;
font-size: 12pt;
font-family: 'Arial Black', sans-serif;"><font size=3 style="font-size:12pt;"><I>To apply a meshing algorithm
</I></font></span></p>
<p class="whs4"><a name=ApplyAlgo></a>To
apply a meshing algorithm </p>
<p><span style="font-size: 12pt;"><font size=3 style="font-size:12pt;">In the main menu select</font></span><span style="font-style: italic;
font-size: 12pt;
font-family: 'Arial Black', sans-serif;"> <font size=3 style="font-size:12pt;"><I></I></font></span><span style="font-weight: bold;"><B>Hypotheses
&gt; </B></span><img src="../image8.gif" width="23px" height="22px" border="0" class="img_whs6"> <span style="font-weight: bold;"><B>Create Algorithms</B></span></p>
&gt; </B></span><img src="../image8.gif" width="23px" height="22px" border="0" class="img_whs5"> <span style="font-weight: bold;"><B>Create Algorithms</B></span></p>
<p>The following menu will appear:</p>
<p>&nbsp;</p>
<p><img src="../image20.jpg" width="464px" height="324px" border="0" class="img_whs7"></p>
<p class="whs6"><img src="../image20.jpg" width="464px" height="324px" border="0" class="img_whs7"></p>
<p>&nbsp;</p>
<p>Select one of the menu items and click <span style="font-weight: bold;"><B>Create</B></span>.</p>
<p>Select one of the menu items and click <span style="font-weight: bold;"><B>Create</B></span>.
The created algorithms shall appear in the Object Browser under the <span
style="font-weight: bold;"><B>Algorithms </B></span>folder:</p>
<p>&nbsp;</p>
<p class="whs6"><img src="../image43.jpg" width="270px" height="99px" border="0" class="img_whs8"></p>
<p class="whs6">&nbsp;</p>
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addButton("show",BTN_TEXT,"Show","","","","",0,0,"","","");
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if (window.writeBtnStyle)
@ -94,7 +93,7 @@ else
</script>
<h1>About modification of meshes</h1>
<p>Type topic text here.</p>
<p>&nbsp;</p>
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<h1>Adding nodes and elements</h1>
<p>Type topic text here.</p>
<p>In SMESH you can add to your mesh different elements such as:</p>
<p>&nbsp;</p>
<ul type="disc" class="whs1">
<li class=kadov-p><p class="whs2">Nodes</p></li>
<li class=kadov-p><p class="whs2">Edges</p></li>
<li class=kadov-p><p class="whs2">Triangles</p></li>
<li class=kadov-p><p class="whs2">Quadrangles</p></li>
<li class=kadov-p><p class="whs2">Tetrahedrons</p></li>
<li class=kadov-p><p><span style="font-weight: bold;"><B>Hexahedrons</B></span></p></li>
</ul>
<p>&nbsp;</p>
<p class=TODO>To add a node or an element to your mesh:</p>
<p class=TODO>&nbsp;</p>
<p class="whs3">1. Select your mesh in the Object Browser
or in the 3D viewer.</p>
<p class="whs3">&nbsp;</p>
<p class="whs3">2. From the <span style="font-weight: bold;"><B>Modification
</B></span>menu choose the <span style="font-weight: bold;"><B>Add </B></span>item,
the following associated submenu will appear:</p>
<p class="whs3">&nbsp;</p>
<p class="whs3"><img src="../image73.gif" width="157px" height="132px" border="0" class="img_whs4"></p>
<p class="whs3">&nbsp;</p>
<p class="whs3">&nbsp;</p>
<p class="whs3">From this submenu select the type of element
which you would like to add to your mesh. The corresponding dialog box
shall appear.</p>
<h4>Adding nodes</h4>
<p class="whs3"><img src="../image60.jpg" width="250px" height="127px" border="0" class="img_whs5"></p>
<p class="whs3">&nbsp;</p>
<p class="whs3">In this dialog box set coordinates for your
node in the <span style="font-weight: bold;"><B>Coordinates </B></span>set of
fields and click the <span style="font-weight: bold;"><B>Apply </B></span>or
<span style="font-weight: bold;"><B>OK </B></span>button. Your node will be created:</p>
<p class="whs3">&nbsp;</p>
<p class="whs3"><img src="../image66.jpg" width="350px" height="181px" border="0" class="img_whs6"></p>
<p class="whs3">&nbsp;</p>
<h4>Adding edges</h4>
<p>&nbsp;</p>
<p class="whs3"><img src="../image65.jpg" width="250px" height="170px" border="0" class="img_whs7"></p>
<p class="whs3">&nbsp;</p>
<p class="whs3">In this dialog box specify the nodes which
will form your edge by selecting them in the 3D viewer with pressed Shift
button and click the <span style="font-weight: bold;"><B>Apply </B></span>or
<span style="font-weight: bold;"><B>OK </B></span>button. Your edge will be created:</p>
<p class="whs3">&nbsp;</p>
<p class="whs3"><img src="../image67.jpg" width="350px" height="183px" border="0" class="img_whs8"></p>
<p class="whs3">&nbsp;</p>
<h4>Adding triangles</h4>
<p class="whs3">&nbsp;</p>
<p class="whs3"><img src="../image64.jpg" width="250px" height="194px" border="0" class="img_whs9"></p>
<p class="whs3">&nbsp;</p>
<p class="whs3">In this dialog box specify the nodes which
will form your triangle by selecting them in the 3D viewer with pressed
Shift button and click the <span style="font-weight: bold;"><B>Apply </B></span>or
<span style="font-weight: bold;"><B>OK </B></span>button. Your triangle will
be created:</p>
<p class="whs3">&nbsp;</p>
<p class="whs3"><img src="../image68.jpg" width="350px" height="182px" border="0" class="img_whs10"></p>
<p class="whs3">&nbsp;</p>
<h4>Adding quadrangles</h4>
<h4 class="whs11"><img src="../image63.jpg" width="250px" height="195px" border="0" class="img_whs12"></h4>
<p class="whs3">In this dialog box specify the nodes which
will form your quadrangle by selecting them in the 3D viewer with pressed
Shift button and click the <span style="font-weight: bold;"><B>Apply </B></span>or
<span style="font-weight: bold;"><B>OK </B></span>button. Your quadrangle will
be created:</p>
<p class="whs3">&nbsp;</p>
<p class="whs3"><img src="../image69.jpg" width="350px" height="183px" border="0" class="img_whs8"></p>
<p class="whs3">&nbsp;</p>
<h4>Adding tetrahedrons</h4>
<p class="whs3"><img src="../image62.jpg" width="250px" height="171px" border="0" class="img_whs13"></p>
<p class="whs3">&nbsp;</p>
<p class="whs3">In this dialog box specify the nodes which
will form your tetrahedron by selecting them in the 3D viewer with pressed
Shift button and click the <span style="font-weight: bold;"><B>Apply </B></span>or
<span style="font-weight: bold;"><B>OK </B></span>button. Your tetrahedron will
be created:</p>
<p class="whs3">&nbsp;</p>
<p class="whs3"><img src="../image70.jpg" width="350px" height="184px" border="0" class="img_whs14"></p>
<h4>Adding hexahedrons</h4>
<p class="whs3"><img src="../image61.jpg" width="250px" height="172px" border="0" class="img_whs15"></p>
<p class="whs3">&nbsp;</p>
<p class="whs3">In this dialog box specify the nodes which
will form your hexahedron by selecting them in the 3D viewer with pressed
Shift button and click the <span style="font-weight: bold;"><B>Apply </B></span>or
<span style="font-weight: bold;"><B>OK </B></span>button. Your hexahedron will
be created:</p>
<p class="whs3">&nbsp;</p>
<p class="whs3">&nbsp;</p>
<p class="whs3"><img src="../image71.jpg" width="350px" height="184px" border="0" class="img_whs14"></p>
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@ -129,10 +129,10 @@ else
<p class=TODO>&nbsp;</p>
<p class="whs2">From the <span style="font-weight: bold;"><B>Create
Hypotheses </B></span>menu select <span style="font-weight: bold;"><B>Arithmetic
1D </B></span>and click <span style="font-weight: bold;"><B>Create</B></span>. The
following dialog box will appear:</p>
<p class="whs2">Select this hypothesis in <a href="about_hypotheses.htm#CreateHyp">the
<span style="font-weight: bold;"><B>Create Hypotheses </B></span>dialog box</a>
click <span style="font-weight: bold;"><B>Create</B></span>. The following dialog
box will appear:</p>
<p class="whs2">&nbsp;</p>

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<h1>Changing orientation of elements</h1>
<p>Type topic text here.</p>
<p>Orientation of an element is changed by reverting the order of nodes
of the selected elements.</p>
<p>&nbsp;</p>
<p class=TODO>To change orientation of elements:</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">1. Display a mesh or a submesh in the 3D
viewer.</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">2. In the <span style="font-weight: bold;"><B>Modification
</B></span>menu select the <span style="font-weight: bold;"><B>Orientation </B></span>item
or click <img src="../image79.gif" width="21px" height="21px" border="0" class="img_whs2"> button in the toolbar. The following dialog box
will appear:</p>
<p>&nbsp;</p>
<p class="whs1"><img src="../image78.gif" width="292px" height="358px" border="0" class="img_whs3"></p>
<p>&nbsp;</p>
<ul type="disc" class="whs4">
<li class=kadov-p><p class="whs5"><span
style="font-weight: bold;"><B>The main list </B></span><span>shall contain the
elements which will be reoriented.</span> You can click on an element
in the 3D viewer and it will be highlighted. After that click the <span
style="font-weight: bold;"><B>Add </B></span>button and the ID of this element
will be added to the list. To remove a selected element or elements from
the list click the <span style="font-weight: bold;"><B>Remove </B></span>button.
The <span style="font-weight: bold;"><B>Sort </B></span>button allows to sort
the list of elements IDs. The <span style="font-weight: bold;"><B>Set filter
</B></span>button allows to apply a definite filter to selection of elements
of your group.</p></li>
<li class=kadov-p><p class="whs5"><span
style="font-weight: bold;"><B>Apply to all </B></span><span>radio button allows
to modify the orientation of all elements of the currently displayed mesh
or submesh.</span></p></li>
<li class=kadov-p><p class="whs5"><span
style="font-weight: bold;"><B>Select from </B></span>set of fields allows to
choose a submesh or an existing group whose elements will be automatically
added to the list.</p></li>
</ul>
<p class="whs1">&nbsp;</p>
<p class="whs1">3. Click the <span style="font-weight: bold;"><B>Apply
</B></span>or <span style="font-weight: bold;"><B>OK </B></span>button to confirm
the operation.</p>
<p>&nbsp;</p>
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<title>Constructing groups of specific elements</title>
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<h1>Constructing groups of specific elements</h1>
<p>In SMESH you can easily construct groups of specific elements (nodes,
edges or faces) which will be taken from a definite submesh.</p>
<p>&nbsp;</p>
<p class=TODO>To construct a group of specific elements:</p>
<p class=TODO>&nbsp;</p>
<p class="whs1">Right-click on a submesh in the Object Browser
and choose the <span style="font-weight: bold;"><B>Construct Group </B></span>item
or select your submesh in the Object Browser and in the <span style="font-weight: bold;"><B>Mesh
</B></span>menu chose the <span style="font-weight: bold;"><B>Construct Group
</B></span>item. SMESH will construct several groups consisting of elements
of the definite type: nodes, edges or faces</p>
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@ -146,7 +147,32 @@ else
<p class="whs5">&nbsp;</p>
<p class="whs1">&nbsp;</p>
<p class="whs3">In the Object Browser the structure of the
new mesh will be displayed as follows:</p>
<p class="whs3">&nbsp;</p>
<p class="whs3"><img src="../image44.jpg" width="268px" height="161px" border="0" class="img_whs7"></p>
<p class="whs3">&nbsp;</p>
<p class="whs3">It contains:</p>
<p class="whs3">&nbsp;</p>
<ul type="disc" class="whs2">
<li class=kadov-p><p class="whs3">a reference to the
geometrical object on the basis of which the mesh has been constructed;</p></li>
<li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Applied
hypotheses </B></span>folder containing the references to the hypotheses applied
to the construction of the mesh;</p></li>
<li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Applied
algorithms </B></span>folder containing the references to the algorithms applied
to the construction of the mesh.</p></li>
</ul>
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<p class="whs5">&nbsp;</p>
<p class="whs5">&nbsp;</p>
<p class="whs3">In the Object Browser the structure of the
new submesh will be displayed as follows:</p>
<p class="whs3">&nbsp;</p>
<p class="whs3"><img src="../image45.jpg" width="299px" height="221px" border="0" class="img_whs7"></p>
<p class="whs3">&nbsp;</p>
<p class="whs3">It contains:</p>
<p class="whs3">&nbsp;</p>
<ul type="disc" class="whs2">
<li class=kadov-p><p class="whs3">a reference to the
geometrical object on the basis of which the submesh has been constructed;</p></li>
<li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Applied
hypotheses </B></span>folder containing the references to the hypotheses applied
to the construction of the submesh;</p></li>
<li class=kadov-p><p class="whs3"><span style="font-weight: bold;"><B>Applied
algorithms </B></span>folder containing the references to the algorithms applied
to the construction of the submesh.</p></li>
</ul>
<p class="whs3">&nbsp;</p>
<p class="whs5">&nbsp;</p>
<p class="whs5">&nbsp;</p>
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<h1>Creating groups</h1>
<p class="whs1"><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs2"> <span style="font-weight: normal;">In
SMESH you can create groups of elements of different types and having
definite properties.</span></p>
<p class="whs1">&nbsp;</p>
<p class=TODO>To create a group of elements:</p>
<p class=TODO>&nbsp;</p>
<p class="whs3">1. In the <span style="font-weight: bold;"><B>Mesh
</B></span><span>menu select </span><span style="font-weight: bold;"><B>Create
Group</B></span><span>. The following dialog box will appear:</span></p>
<p class="whs4">&nbsp;</p>
<p class="whs5">&nbsp;<img src="../image47.jpg" width="200px" height="374px" border="0" class="img_whs6"></p>
<p class="whs5">&nbsp;</p>
<p class="whs7">This dialog box contains
the following fields which should be filled:</p>
<p class="whs5">&nbsp;</p>
<ul type="disc" class="whs8">
<li class=kadov-p><p class="whs7"><span
style="font-weight: bold;"><B>Mesh: </B></span>the name of the mesh whose elements
will form your group. You can enter the name manually or select your mesh
in the Objet Browser or in the 3D viewer.</p></li>
<li class=kadov-p><p class="whs7"><span
style="font-weight: bold;"><B>Elements Type </B></span>set of radio buttons allows
to select the type of elements which will form your group:</p></li>
<ul type="disc" class="whs8">
<li class=kadov-p><p class="whs9">Nodes</p></li>
<li class=kadov-p><p class="whs9">Edges
</p></li>
<li class=kadov-p><p class="whs9">Faces</p></li>
<li class=kadov-p><p class="whs9">Volumes</p></li>
</ul>
<li class=kadov-p><p class="whs7"><span
style="font-weight: bold;"><B>Name </B></span><span>field allows to enter the
name of your new group.</span></p></li>
<li class=kadov-p><p class="whs7"><span
style="font-weight: bold;"><B>Group type </B></span>set of radio buttons allows
to select the type of your group: </p></li>
<ul type="disc" class="whs8">
<li class=kadov-p><p class="whs7"><span
style="font-weight: bold;"><B>Standalone group </B></span>&nbsp;consisting
of mesh elements.</p></li>
<li class=kadov-p><p class="whs7"><span
style="font-weight: bold;"><B>Group on geometry </B></span><span>consisting of
geometrical elements.</span> If you choose this type of group your dialog
box will change and it will look like as follows:</p></li>
</ul>
</ul>
<p class="whs7">&nbsp;</p>
<p class="whs10"><img src="../image48.jpg" width="200px" height="374px" border="0" class="img_whs6"></p>
<p class="whs10">&nbsp;</p>
<p class="whs10">In this dialog box you should enter the name
of the geometrical object (you can enter the name manually or select your
geometrical object in the Objet Browser or in the 3D viewer) from which
the elements will be taken. And after confirmation of the operation SMESH
will create a new group consisting of geometrical elements of the previously
defined type.</p>
<p class="whs7">&nbsp;</p>
<ul type="disc" class="whs8">
<li class=kadov-p><p class="whs7"><span
style="font-weight: bold;"><B>Content </B></span>field<span style="font-weight: bold;">
<B></B></span>allows to manually define the mesh elements which will form your
group. You can click on an element in the 3D viewer and it will be highlighted.
After that click the <span style="font-weight: bold;"><B>Add </B></span>button
and the ID of this element will be added to the list. To remove a selected
element or elements from the list click the <span style="font-weight: bold;"><B>Remove
</B></span>button. The <span style="font-weight: bold;"><B>Sort </B></span>button
allows to sort the list of elements IDs. The <span style="font-weight: bold;"><B>Set
filter </B></span><span>button allows to apply a definite filter to selection
of the elements of your group.</span></p></li>
<li class=kadov-p><p class="whs7"><span
style="font-weight: bold;"><B>Select from </B></span>set of fields allows to
choose a submesh or an existing group whose elements of the previously
defined type will be added to the list of elements which will form your
group.</p></li>
</ul>
<p class="whs7">&nbsp;</p>
<p class="whs7">2. Click the <span style="font-weight: bold;"><B>OK
</B></span><span>button to confirm creation of your group or </span><span
style="font-weight: bold;"><B>Cancel </B></span><span>to quit this dialog box.</span></p>
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<h1>Cutting quadrangles</h1>
<p><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> This operation allows to cut one or several quadrangle
elements by addition of a supplementary edge which will connect two opposite
corners. </p>
<p>&nbsp;</p>
<p class=TODO>To cut quadrangles:</p>
<p class="whs2">&nbsp;</p>
<p class="whs2">1. Display a mesh or a submesh in the 3D
viewer.</p>
<p class="whs2">&nbsp;</p>
<p class="whs2">2. In the <span style="font-weight: bold;"><B>Modification
</B></span>menu select the <span style="font-weight: bold;"><B>Cutting of quadrangles
</B></span>item or click <img src="../image82.gif" width="25px" height="22px" border="0" class="img_whs3"> button in the toolbar. The following
dialog box will appear:</p>
<p>&nbsp;</p>
<p class="whs2"><img src="../image50.jpg" width="292px" height="412px" border="0" class="img_whs4"></p>
<p>&nbsp;</p>
<ul type="disc" class="whs5">
<li class=kadov-p><p class="whs6"><span
style="font-weight: bold;"><B>The main list </B></span>shall contain the quadrangles
which will be cutted. You can click on an quadrangle in the 3D viewer
and it will be highlighted. After that click the <span style="font-weight: bold;"><B>Add
</B></span>button and the ID of this quadrangle will be added to the list.
To remove a selected element or elements from the list click the <span
style="font-weight: bold;"><B>Remove </B></span>button. The <span style="font-weight: bold;"><B>Sort
</B></span>button allows to sort the list of IDs. The <span style="font-weight: bold;"><B>Set
filter </B></span>button allows to apply a definite filter to selection of
quadrangles.</p></li>
<li class=kadov-p><p class="whs6"><span
style="font-weight: bold;"><B>Apply to all </B></span>radio button allows to
modify the orientation of all quadrangles of the currently displayed mesh
or submesh.</p></li>
<li class=kadov-p><p class="whs6"><span
style="font-weight: bold;"><B>Use diagonal 2-4 </B></span>radio button allows
to specify the opposite corners which will be connected by the cutting
edge.</p></li>
<li class=kadov-p><p class="whs6"><span
style="font-weight: bold;"><B>Preview </B></span></p></li>
<li class=kadov-p><p class="whs6"><span
style="font-weight: bold;"><B>Select from </B></span>set of fields allows to
choose a submesh or an existing group whose quadrangle elements will be
automatically added to the list.</p></li>
</ul>
<p class="whs2">&nbsp;</p>
<p class="whs2">3. Click the <span style="font-weight: bold;"><B>Apply
</B></span>or <span style="font-weight: bold;"><B>OK </B></span>button to confirm
the operation.</p>
<p class="whs7">&nbsp;</p>
<p class="whs7">&nbsp;</p>
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<title>Local Length hypothesis</title>
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<h1>Deflection 1D hypothesis</h1>
<h1>Average Length hypothesis</h1>
<p><span style="font-weight: bold;"><B><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> Deflection 1D</B></span>
hypothesis is used to build 1D mesh on geometrical edges.</p>
<p>A geometrical edge is divided into equal segments so that the maximum
distance between the edge curve and the line connecting segment ends is
not more than the specified deflection value. Then mesh nodes are constructed
at segment ends location and 1D mesh elements are constructed on them.</p>
<p><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> <span style="font-weight: bold;"><B>Average Length </B></span>hypothesis
can be applied for meshing of edges composing your geometrical object.
Definition of this hypothesis consists of setting the <span style="font-weight: bold;"><B>length</B></span>
of segments, which will split these edges. The points on the edges generated
by these segments will represent nodes of your mesh. Later these nodes
will be used for meshing of the faces abutting to these edges.</p>
<p>&nbsp;</p>
<p class=TODO>To define the Deflection 1D hypothesis:</p>
<p class=TODO>&nbsp;</p>
<p class="whs2">From the <span style="font-weight: bold;"><B>Create
Hypotheses </B></span>menu select <span style="font-weight: bold;"><B>Deflection
1D </B></span>and click <span style="font-weight: bold;"><B>Create</B></span>. The
following dialog box will appear:</p>
<p class="whs2"><img src="../image41.gif" width="367px" height="224px" border="0" class="img_whs3"></p>
<p class="whs2">&nbsp;</p>
<p class="whs2"><img src="../image17.jpg" width="318px" height="195px" border="0" class="img_whs3"></p>
<p class=TODO>To define the Average Length hypothesis:</p>
<p class=TODO>&nbsp;</p>
<p class="whs4">Select this hypothesis in <a href="about_hypotheses.htm#CreateHyp">the
<span style="font-weight: bold;"><B>Create Hypotheses </B></span>dialog box</a>
click <span style="font-weight: bold;"><B>Create</B></span>. The following dialog
box will appear:</p>
<p class="whs4">&nbsp;</p>
<p class="whs4">In this dialog box you can set:</p>
<p class="whs5"><img src="../image43.gif" width="304px" height="233px" border="0" class="img_whs6"></p>
<p class="whs4">&nbsp;</p>
<p class="whs5">&nbsp;</p>
<ul type="disc" class="whs5">
<p class="whs7">In this dialog box you can set:</p>
<p class="whs7">&nbsp;</p>
<ul type="disc" class="whs8">
<li class=kadov-p><p class="whs4"><span style="font-weight: bold;"><B>Name
</B></span>of your Deflection 1D hypothesis;</p></li>
<li class=kadov-p><p class="whs7"><span style="font-weight: bold;"><B>Name
</B></span>of your Average Length hypothesis</p></li>
<li class=kadov-p><p class="whs6">Deflection <span style="font-weight: normal;">value</span></p></li>
<li class=kadov-p><p class="whs7"><span style="font-weight: bold;"><B>Length
</B></span>of segments which will split the edges of your geometrical object</p></li>
</ul>
<p class="whs7">&nbsp;</p>
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<h1>Diagonal inversion of elements</h1>
<p>Type topic text here.</p>
<p>&nbsp;In SMESH
you can inverse the diagonal (edge) of a pseudo-quadrangle formed by two
neighboring triangles with one common edge.</p>
<p>&nbsp;</p>
<p class=TODO>To inverse the diagonal:</p>
<p class=TODO>&nbsp;</p>
<p class="whs1">1. From the <span style="font-weight: bold;"><B>Modification
</B></span>menu choose the <span style="font-weight: bold;"><B>Diagonal inversion
</B></span>item or click <img src="../image70.gif" width="24px" height="22px" border="0" class="img_whs2"> button in the toolbar. The following
dialog box shall appear:</p>
<p class="whs1">&nbsp;</p>
<p class="whs1"><img src="../image69.gif" width="298px" height="150px" border="0" class="img_whs3"></p>
<p class="whs1">&nbsp;</p>
<p class="whs1">2. Enter the ID of the required edge in the
<span style="font-weight: bold;"><B>Edge </B></span>&nbsp;field
or select this edge in the 3D viewer. </p>
<p class="whs1">&nbsp;</p>
<p class="whs1">3. Click the <span style="font-weight: bold;"><B>Apply
</B></span>or <span style="font-weight: bold;"><B>OK </B></span>button.</p>
<p class=TODO
style="margin-left: 40px;">&nbsp;</p>
<p>&nbsp;</p>
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<h1>Displacing nodes</h1>
<h1>Moving nodes</h1>
<p>Type topic text here.</p>
<p>In SMESH you can change the location of any node of your mesh. In this
case all adjacent elements (edges) will be also transformed right after
the displaced node.</p>
<p>&nbsp;</p>
<p class=TODO>To displace a node:</p>
<p class=TODO>&nbsp;</p>
<p class="whs1">1. From the <span style="font-weight: bold;"><B>Modification
</B></span>menu choose the <span style="font-weight: bold;"><B>Move node </B></span>item
or click <img src="../image67.gif" width="24px" height="22px" border="0" class="img_whs2"> button in the toolbar. The following dialog box
shall appear:</p>
<p class="whs1">&nbsp;</p>
<p class="whs1"><img src="../image68.gif" width="373px" height="262px" border="0" class="img_whs3"></p>
<p class="whs1">&nbsp;</p>
<p class="whs1">2. Enter the ID of the required node in the
<span style="font-weight: bold;"><B>Node ID </B></span>&nbsp;field
or select this node in the 3D viewer. The coordinates of your node will
be automatically displayed in the <span style="font-weight: bold;"><B>Coordinates
</B></span>set of fields.</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">3. Set new coordinates for your node in the
<span style="font-weight: bold;"><B>Coordinates </B></span>set of fields.</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">4. Click the <span style="font-weight: bold;"><B>Apply
</B></span>or <span style="font-weight: bold;"><B>OK </B></span>button.</p>
<p class="whs1">&nbsp;</p>
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<p class="whs1">2. From the <span style="font-weight: bold;"><B>Numbering
</B></span>menu select<span style="font-weight: bold;"><B> Display Elements #</B></span>.</p>
<p class="whs1">2. Right-click on the mesh in the 3D viewer
and from the associated pop-up menu choose <span style="font-weight: bold;"><B>Numbering
&gt; Display Elements #</B></span>.</p>
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Nodes #</B></span>.</p>
<p class="whs1">2. Right-click on the mesh in the 3D viewer
and from the associated pop-up menu choose <span style="font-weight: bold;"><B>Numbering
&gt; Display Nodes #</B></span>.</p>
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<h1>Editing groups</h1>
<p class=TODO
style="margin-left: 0px;">To edit an existing group of elements:</p>
<p class=TODO>&nbsp;</p>
<p class="whs1">1. Select your group in the Object Browser
and in the <span style="font-weight: bold;"><B>Mesh </B></span>menu click the
<span style="font-weight: bold;"><B>Edit Group </B></span>item or <img src="../image74.gif" width="21px" height="22px" border="0" class="img_whs2"> icon in the toolbar. The following dialog box will appear:</p>
<p class="whs1">&nbsp;</p>
<p class="whs1"><img src="../image49.jpg" width="250px" height="468px" border="0" class="img_whs3"></p>
<p class="whs4">&nbsp;</p>
<p class="whs1">In this dialog box you can modify the name<span
style="font-weight: bold;"> <B></B></span>of your group and add or remove the
elements forming it. For more information <a href="creating_groups.htm">see
here</a>.</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">2. Click the <span style="font-weight: bold;"><B>OK
</B></span><span>or </span><span style="font-weight: bold;"><B>&nbsp;Apply
</B></span><span>button to confirm modification of the group.</span></p>
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<h1>Editing hypotheses</h1>
<h1>Editing hypotheses and algorithms</h1>
<p>In SMESH you can <span style="font-weight: bold;"><B>rename</B></span> created
and already applied hypotheses and algorithms and <span style="font-weight: bold;"><B>edit</B></span>
the input data of the created and already applied hypotheses.</p>
<p>&nbsp;</p>
<p class=TODO>To rename a hypothesis or algorithm:</p>
<p class=TODO>&nbsp;</p>
<p class="whs1">1. Select the required hypothesis or algorithm
in the Object Browser and right-click on it. From the associated popup
menu select the <span style="font-weight: bold;"><B>Rename </B></span>item, the
following dialog box will appear:</p>
<p class="whs1">&nbsp;</p>
<p class="whs1"><img src="../image46.jpg" width="347px" height="145px" border="0" class="img_whs2"></p>
<p class="whs1">&nbsp;</p>
<p class="whs1">2. In this dialog box enter a new name for
your hypothesis or algorithm and click the <span style="font-weight: bold;"><B>OK
</B></span>button.</p>
<p class="whs1">&nbsp;</p>
<p class=TODO>To edit the input data of a hypothesis:</p>
<p class=TODO>&nbsp;</p>
<p class="whs1">1. Select the required hypothesis &nbsp;in
the Object Browser and right-click on it. From the associated popup menu
select the <span style="font-weight: bold;"><B>Edit </B></span>item and in the
appeared dialog box (it will differ depending on the type of the edited
hypothesis) enter a new input value for your hypothesis.</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">2. Click the <span style="font-weight: bold;"><B>OK
</B></span>button to confirm your changes.</p>
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<p>&nbsp;</p>
<p class="whs2">&nbsp;</p>
<p>&nbsp;</p>
<p class=TODO>To apply the Length from edges hypothesis:</p>
<p class=TODO>&nbsp;</p>
<p class="whs2">Select this hypotheses in <a href="about_hypotheses.htm#CreateHyp">the
<span style="font-weight: bold;"><B>Create Hypotheses </B></span>dialog box</a>
click <span style="font-weight: bold;"><B>Create</B></span>.</p>
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<p class=TODO>&nbsp;</p>
<p class="whs4">From the <span style="font-weight: bold;"><B>Create
Hypotheses </B></span>menu select <span style="font-weight: bold;"><B>Average
Length </B></span>and click <span style="font-weight: bold;"><B>Create</B></span>.
The following dialog box will appear:</p>
<p class="whs4">Select this hypotheses in <a href="about_hypotheses.htm#CreateHyp">the
<span style="font-weight: bold;"><B>Create Hypotheses </B></span>dialog box</a>
click <span style="font-weight: bold;"><B>Create</B></span>. The following dialog
box will appear:</p>
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<head>
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<title>Length from edges</title>
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<h1>Max Element Area hypothesis</h1>
<h1>Length from edges (2D hypothesis for Triangulator) hypothesis</h1>
<p><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> <span style="font-weight: bold;"><B>Max Element Area </B></span>hypothesis
can be applied for meshing of 2D faces composing your geometrical object.
Definition of this hypothesis consists of setting the <span style="font-weight: bold;"><B>maximum
area </B></span>of meshing elements (depending on the chosen meshing algorithm
it can be <span style="font-weight: bold;"><B>triangles</B></span> or <span style="font-weight: bold;"><B>quadrangles</B></span>),
which will compose the mesh of these 2D faces. </p>
<p><span style="font-weight: bold;"><B><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> Length from edges</B></span>
hypothesis builds 1D mesh segments having a length calculated as an average
edge length for a given wire. </p>
<p>&nbsp;</p>
<p class=TODO>To define the Max Element Area hypothesis:</p>
<p>This hypothesis has no parameters.</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p class=TODO>To apply the Length from edges hypothesis:</p>
<p class=TODO>&nbsp;</p>
<p class="whs2">From the <span style="font-weight: bold;"><B>Hypotheses
</B></span>menu select <span style="font-weight: bold;"><B>Max Element Area </B></span>and<span
style="font-weight: bold;"> <B></B></span>click <span style="font-weight: bold;"><B>Create</B></span>.
The following dialog box will appear:</p>
<p class="whs2">Select this hypothesis in <a href="about_hypotheses.htm#CreateHyp">the
<span style="font-weight: bold;"><B>Create Hypotheses </B></span>dialog box</a>
click <span style="font-weight: bold;"><B>Create</B></span>.</p>
<p class="whs2">&nbsp;</p>
<p class="whs3"><img src="../image48.gif" width="304px" height="233px" border="0" class="img_whs4"></p>
<p class="whs3">&nbsp;</p>
<p class="whs5">In this dialog box you can set:</p>
<p class="whs5">&nbsp;</p>
<ul type="disc" class="whs6">
<li class=kadov-p><p class="whs5"><span style="font-weight: bold;"><B>Name
</B></span>of your Max Element Area hypothesis</p></li>
<li class=kadov-p><p class="whs5"><span style="font-weight: bold;"><B>Max.
Area</B></span>:<span style="font-weight: bold;"> <B></B></span>the maximum area<span
style="font-weight: bold;"> <B></B></span>of meshing elements</p></li>
</ul>
<p class="whs5">&nbsp;</p>
<p class="whs2">&nbsp;</p>
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<h1>Max Element Volume hypothesis</h1>
<h1>Non conform mesh allowed hypothesis</h1>
<p><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> <span style="font-weight: bold;"><B>Max Element Area </B></span>hypothesis
can be applied for meshing of 3D objects composing your geometrical object.
Definition of this hypothesis consists of setting the <span style="font-weight: bold;"><B>maximum
volume </B></span>of 3D meshing elements (depending on the chosen meshing
algorithm it can be <span style="font-weight: bold;"><B>hexahedrons </B></span>or
<span style="font-weight: bold;"><B>tetrahedrons</B></span>), which will compose
the mesh of these 3D objects. </p>
<p><span style="font-weight: bold;"><B><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> Non Conform mesh allowed</B></span>
hypothesis allows to generate non-conform meshes (that is, meshes having
some edges ending on an edge or face of adjacent elements). </p>
<p>&nbsp;</p>
<p class=TODO>To define the Max Element Volume hypothesis:</p>
<p>This hypothesis has no parameters.</p>
<p>&nbsp;</p>
<p class=TODO>To apply this hypothesis:</p>
<p class=TODO>&nbsp;</p>
<p class="whs2">From the <span style="font-weight: bold;"><B>Hypotheses
</B></span>menu select <span style="font-weight: bold;"><B>Max Element Volume
</B></span>and click <span style="font-weight: bold;"><B>Create</B></span>. The following
dialog box will appear:</p>
<p class="whs2">&nbsp;</p>
<p class="whs3"><img src="../image49.gif" width="304px" height="233px" border="0" class="img_whs4"></p>
<p class="whs3">&nbsp;</p>
<p class="whs5">In this dialog box you can set:</p>
<p class="whs5">&nbsp;</p>
<ul type="disc" class="whs6">
<li class=kadov-p><p class="whs5"><span style="font-weight: bold;"><B>Name
</B></span>of your Max Element Volume hypothesis</p></li>
<li class=kadov-p><p class="whs5"><span style="font-weight: bold;"><B>Max.
Volume</B></span>:<span style="font-weight: bold;"> <B></B></span>the maximum volume
of 3D meshing elements</p></li>
</ul>
<p class="whs5">&nbsp;</p>
<p class="whs2">Select this hypothesis s in <a href="about_hypotheses.htm#CreateHyp">the
<span style="font-weight: bold;"><B>Create Hypotheses </B></span>dialog box</a>
click <span style="font-weight: bold;"><B>Create</B></span>. </p>
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<h1>Merging nodes</h1>
<p><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> This functionality allows user to detect groups of coincident
nodes with desirable tolerance, edit these groups and merge.</p>
<p>&nbsp;</p>
<p class=TODO>To merge nodes of your mesh:</p>
<p class=TODO>&nbsp;</p>
<p class="whs2">1. From the <span style="font-weight: bold;"><B>Modification
</B></span>choose <span style="font-weight: bold;"><B>Transformation </B></span>and
&nbsp;from its
sub-menu select the <span style="font-weight: bold;"><B>Merge nodes </B></span>item.
The following dialog box shall appear:</p>
<p>&nbsp;</p>
<p class="whs2"><img src="../image53.jpg" width="258px" height="450px" border="0" class="img_whs3"></p>
<p class="whs2">&nbsp;</p>
<p class="whs2">This dialog box allows to create groups of
coincident nodes and to merge them. </p>
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<p>This hypothesis has no parameters.</p>
<p>&nbsp;</p>
<p class=TODO>To apply this hypothesis:</p>
<p class=TODO>&nbsp;</p>
<p class="whs2">Select this hypothesis s in <a href="about_hypotheses.htm#CreateHyp">the
<span style="font-weight: bold;"><B>Create Hypotheses </B></span>dialog box</a>
click <span style="font-weight: bold;"><B>Create</B></span>. </p>
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<p>&nbsp;</p>
<p class="whs2">&nbsp;</p>
<p class=TODO>To apply this hypothesis:</p>
<p class=TODO>&nbsp;</p>
<p class="whs2">Select this hypothesis s in <a href="about_hypotheses.htm#CreateHyp">the
<span style="font-weight: bold;"><B>Create Hypotheses </B></span>dialog box</a>
click <span style="font-weight: bold;"><B>Create</B></span>. </p>
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<h1>Reassigning hypotheses and algorithms</h1>
<p>After you have created a mesh or submesh with definite applied hypotheses
and algorithms you can edit your mesh by <span style="font-weight: bold;"><B>assigning</B></span>
new hypotheses and algorithms or <span style="font-weight: bold;"><B>unassigning
</B></span>the applied hypotheses and algorithms.</p>
<p>&nbsp;</p>
<p class=TODO>To assign or unassign algorithms and hypotheses:</p>
<p class=TODO>&nbsp;</p>
<p class="whs1">1. In the <span style="font-weight: bold;"><B>Mesh
</B></span><span>menu select the </span><span style="font-weight: bold;"><B>Edit
Hypothesis</B></span><span>, the following dialog box will appear:</span><span
style="font-weight: bold;"> <B></B></span></p>
<p>&nbsp;</p>
<p class="whs1"><img src="../image41.jpg" width="300px" height="449px" border="0" class="img_whs2"></p>
<p class="whs1">&nbsp;</p>
<p class="whs1">This dialog box contains the following fields:
</p>
<ul type="disc" class="whs3">
<li class=kadov-p><p class="whs1"><span style="font-weight: bold;"><B>Mesh
or SubMesh </B></span>field: here you should enter the name of the mesh or
submesh for which you would like to assign or unassign hypotheses and
algorithms. It can be also done by choosing the required mesh or submesh
in the Object Browser or in the 3D viewer;</p></li>
<li class=kadov-p><p class="whs4">Hypotheses
<span style="font-weight: normal;">set of fields containing two columns:
</span></p></li>
<ul type="disc" class="whs3">
<li class=kadov-p><p class="whs4">Available:
<span style="font-weight: normal;">the hypotheses which have been created
in the current study;</span></p></li>
<li class=kadov-p><p class="whs4"><span
style="margin-left: 40px; font-weight: bold;"><B>Used: </B></span><span style="margin-left: 40px; font-weight: normal;">the
hypotheses which have been applied to previously selected mesh or submesh.</span><span
style="margin-left: 40px; font-weight: bold;"> <B></B></span></p></li>
</ul>
<li class=kadov-p><p class="whs1"><span style="font-weight: bold;"><B>Algorithms
</B></span>set of fields containing two columns:</p></li>
<ul type="disc" class="whs3">
<li class=kadov-p><p class="whs4">Available:
<span style="font-weight: normal;">the algorithms which have been created
in the current study.</span></p></li>
<li class=kadov-p><p class="whs4">Used:
<span style="font-weight: normal;">the algorithms which have been applied
to previously selected mesh or submesh.</span> </p></li>
</ul>
</ul>
<p class="whs1">&nbsp;</p>
<p class="whs1">2. Double-click on the definite algorithm
or hypothesis to move it from the <span style="font-weight: bold;"><B>Available
</B></span>column into the <span style="font-weight: bold;"><B>Used </B></span>column
and vice versa. &nbsp;Thus
you will be able to apply new hypotheses and algorithms to your mesh or
unassign<span style="font-weight: bold;"> <B></B></span>the applied hypotheses
and algorithms.</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">3. Confirm your changes by clicking the <span
style="font-weight: bold;"><B>OK </B></span>button.</p>
<p class="whs1">&nbsp;</p>
<p class="whs5">After modification of applied algorithms you
should recompute your mesh once again.</p>
<p class="whs1">&nbsp;</p>
<p class="whs5"><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs6"> You can also unassign an
applied algorithm or hypothesis by right-clicking on it in the Object
Browser and choosing from the associated popup menu the <span style="font-weight: bold;"><B>Unassign
Algorithm </B></span>or <span style="font-weight: bold;"><B>Unassign Hypothesis
</B></span><span>item.</span></p>
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<h1>Removing nodes and elements</h1>
<p>Type topic text here.</p>
<p>In SMESH you can remove nodes and all types of cells of your mesh. </p>
<p>&nbsp;</p>
<p class=TODO>To remove a node:</p>
<p class=TODO
style="margin-left: 40px;">&nbsp;</p>
<p class="whs1">1. Select your mesh in the Object Browser
or in the 3D viewer.</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">2. From the <span style="font-weight: bold;"><B>Modification
</B></span>menu choose <span style="font-weight: bold;"><B>Remove </B></span>and
from the associated submenu select the <span style="font-weight: bold;"><B>Remove
nodes</B></span>, or just click <img src="../image88.gif" width="27px" height="25px" border="0" class="img_whs2"> icon in the toolbar. The
following dialog box will appear:</p>
<p>&nbsp;</p>
<p class="whs1"><img src="../image87.gif" width="315px" height="217px" border="0" class="img_whs3"></p>
<p class="whs1">&nbsp;</p>
<p class="whs1">In this dialog box you can specify one or
several nodes (with pressed Shift button) by choosing them in the 3D viewer.</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">3. Click <span style="font-weight: bold;"><B>OK
</B></span>or <span style="font-weight: bold;"><B>Apply </B></span>&nbsp;to
confirm deletion of the specified nodes.</p>
<p class="whs1">&nbsp;</p>
<p class="whs4"><img src="../note1.gif" x-maintain-ratio="TRUE" width="36px" height="38px" border="0" class="img_whs5">Be careful while removing
nodes because if you remove a definite node of your mesh all adjacent
elements will be also deleted.</p>
<p class="whs1">&nbsp;</p>
<!--(Table)=========================================================-->
<table x-use-null-cells cellspacing="0" width="100%" class="whs6">
<col class="whs7">
<col class="whs7">
<tr valign="top" class="whs8">
<td width="50%" class="whs9">
<p><img src="../image73.jpg" width="350px" height="183px" border="0" class="img_whs10"></td>
<td width="50%" class="whs11">
<p><img src="../image72.jpg" width="350px" height="183px" border="0" class="img_whs10"></td></tr>
</table>
<p class="whs4">&nbsp;</p>
<p>&nbsp;</p>
<p class=TODO>To remove an element:</p>
<p class=TODO
style="margin-left: 40px;">&nbsp;</p>
<p class="whs1">1. Select your mesh in the Object Browser
or in the 3D viewer.</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">2. From the <span style="font-weight: bold;"><B>Modification
</B></span>menu choose <span style="font-weight: bold;"><B>Remove </B></span>and
from the associated submenu select the <span style="font-weight: bold;"><B>Remove
elements</B></span>, or just click <img src="../image88.gif" width="27px" height="25px" border="0" class="img_whs2"> icon in the toolbar. The
following dialog box will appear:</p>
<p>&nbsp;</p>
<p class="whs1"><img src="../image89.gif" width="318px" height="218px" border="0" class="img_whs12"></p>
<p class="whs1">&nbsp;</p>
<p class="whs1">In this dialog box you can specify one or
several elements of your mesh (with pressed Shift button) by choosing
them in the 3D viewer.</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">3. Click <span style="font-weight: bold;"><B>OK
</B></span>or <span style="font-weight: bold;"><B>Apply </B></span>&nbsp;to
confirm deletion of the specified elements.</p>
<p class="whs1">&nbsp;</p>
<!--(Table)=========================================================-->
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<col class="whs7">
<col class="whs7">
<tr valign="top" class="whs8">
<td width="50%" class="whs9">
<p><img src="../image75.jpg" width="350px" height="183px" border="0" class="img_whs10"></td>
<td width="50%" class="whs11">
<p><img src="../image74.jpg" width="350px" height="184px" border="0" class="img_whs13"></td></tr>
</table>
<p class="whs4">&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
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<h1>Renumbering nodes and elements</h1>
<p>In SMESH you can renumber the nodes and elements of your mesh.</p>
<p>&nbsp;</p>
<p class=TODO>To renumber the nodes of your mesh:</p>
<p class=TODO>&nbsp;</p>
<p class="whs1">1. In the <span style="font-weight: bold;"><B>Modification
</B></span>menu select <span style="font-weight: bold;"><B>Renumbering </B></span>submenu
and choose the <span style="font-weight: bold;"><B>Nodes </B></span>item or click
<img src="../image63.gif" width="29px" height="23px" border="0" class="img_whs2"> button in the toolbar. The following dialog box will
appear: </p>
<p class="whs1">&nbsp;</p>
<p class="whs1">&nbsp;</p>
<p class="whs1"><img src="../image66.gif" width="314px" height="217px" border="0" class="img_whs3"></p>
<p class="whs1">&nbsp;</p>
<p class="whs1">2. Fill the <span style="font-weight: bold;"><B>Mesh
</B></span>field by selecting your mesh in the Object Browser or in the 3D
viewer.</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">3. Click the <span style="font-weight: bold;"><B>Apply
</B></span><span>or </span><span style="font-weight: bold;"><B>OK </B></span><span>button
to perform the operation.</span></p>
<p class="whs1">&nbsp;</p>
<p class="whs1">&nbsp;</p>
<p class=TODO>To renumber the elements of your mesh:</p>
<p class=TODO>&nbsp;</p>
<p class="whs1">1. In the <span style="font-weight: bold;"><B>Modification
</B></span>menu select <span style="font-weight: bold;"><B>Renumbering </B></span>submenu
and choose the <span style="font-weight: bold;"><B>Elements </B></span>item or
click <img src="../image64.gif" width="26px" height="25px" border="0" class="img_whs4"> button in the toolbar. The following dialog box will
appear: </p>
<p class="whs1">&nbsp;</p>
<p class="whs1">&nbsp;</p>
<p class="whs1"><img src="../image65.gif" width="318px" height="220px" border="0" class="img_whs5"></p>
<p class="whs1">&nbsp;</p>
<p class="whs1">2. Fill the <span style="font-weight: bold;"><B>Mesh
</B></span>field by selecting your mesh in the Object Browser or in the 3D
viewer.</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">3. Click the <span style="font-weight: bold;"><B>Apply
</B></span><span>or </span><span style="font-weight: bold;"><B>OK </B></span><span>button
to perform the operation.</span></p>
<p class="whs1">&nbsp;</p>
<p class="whs1">&nbsp;</p>
<p class="whs1">&nbsp;</p>
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<h1>Rotation</h1>
<p>This geometrical operation allows to rotate in space your mesh or some
of its elements.</p>
<p>&nbsp;</p>
<p class=TODO>&nbsp;To
rotate your mesh:</p>
<p class=TODO>&nbsp;</p>
<p class="whs1">From the <span style="font-weight: bold;"><B>Modification
</B></span>choose <span style="font-weight: bold;"><B>Transformation </B></span>and
&nbsp;from its
sub-menu select the <span style="font-weight: bold;"><B>Rotation </B></span>item.
The following dialog box shall appear:</p>
<p class="whs1">&nbsp;</p>
<p class="whs1"><img src="../image55.jpg" width="310px" height="265px" border="0" class="img_whs2"></p>
<p class="whs1">&nbsp;</p>
<p class="whs1">In this dialog box you can specify the elements
which should be rotated and the rotation parameters:</p>
<ul type="disc" class="whs3">
<li class=kadov-p><p class="whs1"><span style="font-weight: bold;"><B>Axis:</B></span>
point and vector</p></li>
<li class=kadov-p><p class="whs1"><span style="font-weight: bold;"><B>Angle
</B></span>of rotation </p></li>
</ul>
<p class="whs1">&nbsp;</p>
<p class="whs1"><span style="font-weight: bold;"><B>Create a
copy </B></span><span>radio button allows to copy the rotated object.</span></p>
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<h1>Sewing meshes</h1>
<p><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> In SMESH you can sew elements of &nbsp;different
meshes. The current functionality allows you to sew:</p>
<p>&nbsp;</p>
<ul type="disc" class="whs2">
<li class=kadov-p><p class="whs3"><a href="#free bord">Free
borders </a></p></li>
<li class=kadov-p><p class="whs3"><a href="#conform">Conform
free borders</a></p></li>
<li class=kadov-p><p class="whs3"><a href="#border to side">Border
to side</a></p></li>
<li class=kadov-p><p class="whs3"><a href="#side elements">Side
elements</a></p></li>
</ul>
<p class="whs3">&nbsp;</p>
<p class=TODO>To sew elements of different meshes:</p>
<p class=TODO>&nbsp;</p>
<p class="whs4">1. From the <span style="font-weight: bold;"><B>Modification
</B></span>menu choose the <span style="font-weight: bold;"><B>Transformation
</B></span>item and &nbsp;from
its sub-menu select the <span style="font-weight: bold;"><B>Sewing </B></span>item.
The following dialog box shall appear:</p>
<p class="whs4">&nbsp;</p>
<p class="whs4"><img src="../image57.gif" width="311px" height="456px" border="0" class="img_whs5"></p>
<p class="whs4">&nbsp;</p>
<p class="whs4">2. In the upper part of this dialog box check
one of the radio buttons corresponding to the type of sewing operation
you would like to perform: </p>
<p class="whs4">&nbsp;</p>
<p class="whs4"><img src="../image61.gif" width="297px" height="62px" border="0" class="img_whs6"> </p>
<p class="whs4">&nbsp;</p>
<p class="whs4">3. Fill the other fields available in the
dialog box</p>
<p class="whs4">4. Click the <span style="font-weight: bold;"><B>OK
</B></span><span>or </span><span style="font-weight: bold;"><B>Apply </B></span>button
to perform the operation of sewing. </p>
<p class="whs3">&nbsp;</p>
<h3><a name="free bord"></a>Sew free borders</h3>
<p>This functionality allows you to unite two free borders of a 2D mesh.</p>
<p>&nbsp;</p>
<p>For sewing free borders you should define three points on each border:
first, second and the last node: </p>
<p>&nbsp;</p>
<ul type="disc" class="whs2">
<li class=kadov-p><p>&nbsp;the
first node specifies beginning of the border ;</p></li>
<li class=kadov-p><p>&nbsp;the
second node specifies the part of the border which should be considered
(as far as the free border usually forms a closed contour);</p></li>
<li class=kadov-p><p>&nbsp;the
last node specifies the end of the border.</p></li>
</ul>
<p>&nbsp;</p>
<p>You can select these nodes in the 3D viewer or define by its id.</p>
<p>&nbsp;</p>
<p>The first and the second nodes should belong to the same link of a face.
The second and the last nodes of a border can be the same. The first and
the last nodes of two borders can be the same. The corresponding end nodes
of two borders will be merged. Intermediate nodes of two borders will
be either merged or inserted into faces of the opposite border.</p>
<p>&nbsp;</p>
<p>The sewing algorithm is as follows:</p>
<p>&nbsp;</p>
<p class="whs4">1. The parameter (U) of each node within
a border is computed. So that the first node has U=0.0, the last node
has U=1.0, for the rest nodes 0.0 &lt; U &lt; 1.0;</p>
<p class="whs4">2. Compare node parameters of the two borders.
If two nodes of the opposite borders have close parameters, they are merged,
i.e. a node of the first border is replaced in all elements by a node
of the second border. If a node has no node with a close parameter in
the opposite border, it is inserted into an edge of element of the opposite
border, an element is split. Two nodes are considered close enough to
merge, if difference of their parameters is less than one fifth of minimum
length of adjacent face edges on the borders.</p>
<p>&nbsp;</p>
<p class="whs4"><img src="../image22.jpg" width="612px" height="225px" border="0" class="img_whs7"></p>
<p class="whs4">&nbsp;</p>
<h3><a name=conform></a>Sew conform free borders</h3>
<p>This functionality can be used to unite two free borders of a 2D mesh.</p>
<p>&nbsp;</p>
<p>The borders of meshes for sewing are defined as for &quot;Sew free borders&quot;
except that the second free border is not limited and can be defined by
the first and the second nodes only. The first nodes of two borders can
be the same.</p>
<p>&nbsp;</p>
<p class="whs4"><img src="../image23.jpg" width="612px" height="230px" border="0" class="img_whs8"></p>
<p>The algorithm is following: counting nodes starting at the first ones,
the n-th node of the first border is merged with the n-th node of the
other border, until the end of either of borders. Nodes of the first border
are replaced in all elements with corresponding nodes of the second border.</p>
<p>For sewing conform free borders you should define three points on the
first border and two points on the second one. User can select these nodes
in 3D viewer or define node by its id.</p>
<p class="whs3">&nbsp;</p>
<p class="whs3">&nbsp;</p>
<h3><a name="border to side"></a>Sew border to side</h3>
<p>&quot;Sew border to side&quot; is intended to sew a free border to a
mesh surface.</p>
<p>The free border is defined as for &quot;Sewing of free borders&quot;.
The place where to sew the border is defined by two nodes, between which
the border faces are placed, so that the first border node is merged with
the first node on the side and the last node of the border is merged with
the second specified node on the side.</p>
<p>&nbsp;</p>
<p class="whs4"><img src="../image30.jpg" width="600px" height="227px" border="0" class="img_whs9"></p>
<p>The algorithm is following.</p>
<p>1. Find a sequence of linked nodes on the side such that the found links
to be most co-directed with the links of the free border.</p>
<p>2. Sew two sequences of nodes using algorithm of &quot;Sewing of free
berders&quot;.</p>
<p>For sewing border to side you should define three points on the border
and two points on the side. User can select these nodes in 3D viewer or
define node by its id.</p>
<p>&nbsp;</p>
<h3><a name="side elements"></a>Sew side elements</h3>
<p class="whs4">&nbsp;</p>
<p>&nbsp;</p>
<p class="whs4"><img src="../image31.jpg" width="620px" height="228px" border="0" class="img_whs10"></p>
<p>This operation is intended to unite two mesh surfaces.</p>
<p>Surfaces may be defined by either 2d or 3d elements. The number of given
elements of the sides must be the same. The sets of given elements must
be topologically equal, i.e. each node of one element set must have a
corresponding node in the other element set and corresponding nodes must
be equally linked. If there are 3d elements in a set, only their free
faces must obey to that rule.</p>
<p>Two corresponding nodes on each side must be specified. They must belong
to one element and must be located on an element set boundary.</p>
<p>Sewing algorithm finds and merges the corresponding nodes starting from
the specified ones.</p>
<p>&nbsp;</p>
<p class="whs4"><img src="../image32.jpg" width="304px" height="222px" border="0" class="img_whs11"></p>
<p>For sewing side elements you should define elements for sewing and two
nodes for merging on the each side. User can select these elements and
nodes in 3D viewer or define them by its id.</p>
<p>&nbsp;</p>
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<h1>Smoothing</h1>
<p><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> Smoothing is used to adjust the locations of element
corners (nodes) to reduce distortions in these elements.</p>
<p>&nbsp;</p>
<p class=TODO>To apply smoothing to the elements of your mesh:</p>
<p class=TODO>&nbsp;</p>
<p class="whs2">1. Display a mesh or a submesh in the 3D
viewer.</p>
<p class="whs2">&nbsp;</p>
<p class="whs2">2. In the <span style="font-weight: bold;"><B>Modification
</B></span>menu select the <span style="font-weight: bold;"><B>Smoothing </B></span>item
or click <img src="../image84.gif" width="24px" height="25px" border="0" class="img_whs3"> button in the toolbar. The following dialog box
will appear:</p>
<p>&nbsp;</p>
<p class="whs2"><img src="../image85.gif" width="319px" height="369px" border="0" class="img_whs4"></p>
<p class="whs2">&nbsp;</p>
<p class="whs2">This dialog box contains the following fields
which should be specified:</p>
<p>&nbsp;</p>
<ul type="disc" class="whs5">
<li class=kadov-p><p class="whs6"><span
style="font-weight: bold;"><B>Id Elements </B></span><span>field allows to specify
the elements which should be smoothed by selecting them in the 3D viewer.
Note: to select several elements press </span><span style="font-weight: bold;"><B>Shift
</B></span><span>button.</span></p></li>
<ul type="disc" class="whs5">
<li class=kadov-p><p class="whs7">Smoothing is applied
to the whole mesh or its part</p></li>
<li class=kadov-p><p><span style="font-weight: bold;"><B>Fixed nodes
ids</B></span>: some nodes keep their location during smoothing. If a mesh
is built on a geometry shape, the nodes built on geometrical edges are
always fixed. If smoothing is applied to a part of a mesh then the boundary
nodes of an elements set are also fixed. Any other nodes may be additionally
fixed.</p></li>
<li class=kadov-p><p>&nbsp;</p></li>
<li class=kadov-p><p><span style="font-weight: bold;"><B>Smoothing
method</B></span>:</p></li>
<ul type="disc" class="whs5">
<li class=kadov-p><p><span style="font-weight: bold;"><B>Laplacian</B></span>
smoothing pulls a node toward the center of surrounding nodes directly
connected to that node along an element edge. Centroidal smoothing pulls
a node toward the element-area-weighted centroid of the surrounding elements.
Typically, the Laplacian method will produce the mesh with the least element
distortion. It is also the faster method. </p></li>
<li class=kadov-p><p><span style="font-weight: bold;"><B>Centroidal</B></span>
smoothing usually produces a mesh that has more uniform element sizes.
Both methods produce good results with &quot;free&quot; meshes.</p></li>
</ul>
</ul>
</ul>
<p class="whs8"><img src="../image83.gif" width="527px" height="281px" border="0" class="img_whs9"></p>
<ul type="disc" class="whs5">
<li class=kadov-p><p class="whs6"><span
style="font-weight: bold;"><B>Iteration limit: </B></span>both of the smoothing
methods use an iterative procedure to converge toward a smoothed mesh.
All nodes are smoothed according to one of the techniques shown above.
Then the smoothing is reevaluated with the updated nodal locations. This
process continues until the maximum number of iterations has been exceeded,
or all elements has aspect ratio less or equal than the specified one.</p></li>
<li class=kadov-p><p class="whs6"><span
style="font-weight: bold;"><B>Max. aspect ratio</B></span>.</p></li>
</ul>
<p class="whs2">&nbsp;</p>
<p class="whs2">3. Click the <span style="font-weight: bold;"><B>Apply
</B></span>or <span style="font-weight: bold;"><B>OK </B></span>button to confirm
the operation.</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
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Hypotheses </B></span>menu select <span style="font-weight: bold;"><B>Start and
End Length </B></span>and click <span style="font-weight: bold;"><B>Create</B></span>.
The following dialog box will appear:</p>
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<h1>Symmetry</h1>
<p>This geometrical operation allows to perform a symmetrical copy of your
mesh or some of its elements.</p>
<p>&nbsp;</p>
<p class=TODO>&nbsp;To
apply symmetry to your mesh:</p>
<p class=TODO>&nbsp;</p>
<p class="whs1">From the <span style="font-weight: bold;"><B>Modification
</B></span>choose <span style="font-weight: bold;"><B>Transformation </B></span>and
&nbsp;from its
sub-menu select the <span style="font-weight: bold;"><B>Symmetry </B></span>item.
The following dialog box shall appear:</p>
<p class="whs1">&nbsp;</p>
<p class="whs1"><img src="../image59.jpg" width="350px" height="258px" border="0" class="img_whs2"></p>
<p class="whs1">&nbsp;</p>
<p class="whs1"><img src="../image58.jpg" width="350px" height="253px" border="0" class="img_whs3"></p>
<p class="whs1">&nbsp;</p>
<p class="whs1"><img src="../image57.jpg" width="350px" height="248px" border="0" class="img_whs4"></p>
<p class="whs1">&nbsp;</p>
<p class="whs1">This operation has three options, you can
symmetrically copy your mesh or some of its elements specifying: </p>
<ul type="disc" class="whs5">
<li class=kadov-p><p class="whs1">one point</p></li>
<li class=kadov-p><p class="whs1">one axis (point and
vector)</p></li>
<li class=kadov-p><p class="whs1">one plane (point and
normal)</p></li>
</ul>
<p class="whs1">&nbsp;</p>
<p class="whs1"><span style="font-weight: bold;"><B>Create a
copy </B></span><span>radio button allows to keep the initial elements or
mesh.</span></p>
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<h1>Tetrahedron (GHS3D) meshing algorithm</h1>
<p><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> This algorithm is used for meshing of 3D entities of
geometrical objects - <span style="font-weight: bold;"><B>volume objects</B></span>.
While <a href="tetrahedron_(netgen)_meshing_algorithm.htm">NETGEN</a>
generates 3D elements having a volume less than the one specified by hypothesis,
GHS3D does not need any hypotheses, all it needs is a surface mesh built
in advance</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p class=TODO>To apply the Tetrahedron GHS3D meshing algorithm:</p>
<p class=TODO>&nbsp;</p>
<p class="whs2"><a href="about_meshing_algorithms.htm#ApplyAlgo">In
the <span style="font-weight: bold;"><B>Create Algorithms </B></span>dialog box</a>
select this algorithm and click <span style="font-weight: bold;"><B>Create</B></span>.</p>
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<p class=TODO>&nbsp;</p>
<p class="whs2">From the <span style="font-weight: bold;"><B>Hypotheses
</B></span>menu select <span style="font-weight: bold;"><B>Create Algorithms
&gt;</B></span> <img src="../image12.gif" width="23px" height="23px" border="0" class="img_whs3"><span style="font-weight: bold;"><B>Tetrahedron
(Netgen) </B></span>and click <span style="font-weight: bold;"><B>Create</B></span>..</p>
<p class="whs2"><a href="about_meshing_algorithms.htm#ApplyAlgo">In
the <span style="font-weight: bold;"><B>Create Algorithms </B></span>dialog box</a>
select this algorithm and click <span style="font-weight: bold;"><B>Create</B></span>.</p>
<p class="whs4">&nbsp;</p>
<p class="whs3">&nbsp;</p>
<p class="whs4">&nbsp;</p>
<p class="whs3">&nbsp;</p>
<p class="whs5">Example:</p>
<p class="whs4">Example:</p>
<p class="whs2"><img src="../image9.gif" width="386px" height="414px" border="0" class="img_whs6"></p>
<p class="whs2"><img src="../image9.gif" width="386px" height="414px" border="0" class="img_whs5"></p>
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<h1>Translation</h1>
<p>This geometrical operation allows to translate in space your mesh or
some of its elements.</p>
<p>&nbsp;</p>
<p class=TODO>&nbsp;To
translate your mesh:</p>
<p class=TODO>&nbsp;</p>
<p class="whs1">From the <span style="font-weight: bold;"><B>Modification
</B></span>choose <span style="font-weight: bold;"><B>Transformation </B></span>and
&nbsp;from its
sub-menu select the <span style="font-weight: bold;"><B>Translation </B></span>item.
The following dialog box shall appear:</p>
<p class="whs1">&nbsp;</p>
<p class="whs1"><img src="../image54.jpg" width="645px" height="231px" border="0" class="img_whs2"></p>
<p class="whs1">&nbsp;</p>
<p class="whs1">This operation has two options, you can translate
in space your mesh or some of its elements specifying: </p>
<ul type="disc" class="whs3">
<li class=kadov-p><p class="whs1">two points (starting
and ending)</p></li>
<li class=kadov-p><p class="whs1">one vector</p></li>
</ul>
<p class="whs1"><span style="font-weight: bold;"><B>Create a
copy </B></span><span>radio button allows to copy the translated object.</span></p>
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<h1>Uniting a set of triangles</h1>
<p><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> In contrast to <a href="uniting_two_triangles.htm">the
previous operation</a> this one allows to unite at once many triangles
if they have adjacent edges. </p>
<p>&nbsp;</p>
<p class=TODO>To union several triangles:</p>
<p class="whs2">&nbsp;</p>
<p class="whs2">1. Display a mesh or a submesh in the 3D
viewer.</p>
<p class="whs2">&nbsp;</p>
<p class="whs2">2. In the <span style="font-weight: bold;"><B>Modification
</B></span>menu select the <span style="font-weight: bold;"><B>Union of triangles
</B></span>item or click <img src="../image80.gif" width="23px" height="24px" border="0" class="img_whs3"> button in the toolbar. The following
dialog box will appear:</p>
<p>&nbsp;</p>
<p class="whs2"><img src="../image81.gif" width="295px" height="362px" border="0" class="img_whs4"></p>
<p>&nbsp;</p>
<ul type="disc" class="whs5">
<li class=kadov-p><p class="whs6"><span
style="font-weight: bold;"><B>The main list </B></span>shall contain the triangles
which will be united. You can click on an triangle in the 3D viewer and
it will be highlighted. After that click the <span style="font-weight: bold;"><B>Add
</B></span>button and the ID of this triangle will be added to the list. To
remove a selected element or elements from the list click the <span style="font-weight: bold;"><B>Remove
</B></span>button. The <span style="font-weight: bold;"><B>Sort </B></span>button
allows to sort the list of IDs. The <span style="font-weight: bold;"><B>Set
filter </B></span>button allows to apply a definite filter to selection of
triangles.</p></li>
<li class=kadov-p><p class="whs6"><span
style="font-weight: bold;"><B>Apply to all </B></span><span>radio button allows
to modify the orientation of all triangles of the currently displayed
mesh or submesh.</span></p></li>
<li class=kadov-p><p class="whs6"><span
style="font-weight: bold;"><B>Select from </B></span>set of fields allows to
choose a submesh or an existing group whose triangle elements will be
automatically added to the list.</p></li>
</ul>
<p class="whs2">&nbsp;</p>
<p class="whs2">3. Click the <span style="font-weight: bold;"><B>Apply
</B></span>or <span style="font-weight: bold;"><B>OK </B></span>button to confirm
the operation.</p>
<p class="whs7">&nbsp;</p>
<p class="whs7"><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> If some selected triangle
elements have no adjacent edges with one of the others, the operation
on these elements shall take no effect.</p>
<p class="whs2">&nbsp;</p>
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<h1>Uniting two triangles</h1>
<p>&nbsp;In SMESH
you can union two neighboring triangles (cells) by deletion of the common
edge.</p>
<p>&nbsp;</p>
<p class=TODO>To unite two triangles:</p>
<p class=TODO>&nbsp;</p>
<p class="whs1">1. From the <span style="font-weight: bold;"><B>Modification
</B></span>menu choose the <span style="font-weight: bold;"><B>Union of two triangles
</B></span>item or click <img src="../image71.gif" width="23px" height="23px" border="0" class="img_whs2"> button in the toolbar. The following
dialog box shall appear:</p>
<p class="whs1">&nbsp;</p>
<p class="whs1"><img src="../image72.gif" width="295px" height="148px" border="0" class="img_whs3"></p>
<p class="whs1">&nbsp;</p>
<p class="whs1">2. Enter the ID of the required edge in the
<span style="font-weight: bold;"><B>Edge </B></span>&nbsp;field
or select this edge in the 3D viewer. </p>
<p class="whs1">&nbsp;</p>
<p class="whs1">3. Click the <span style="font-weight: bold;"><B>Apply
</B></span>or <span style="font-weight: bold;"><B>OK </B></span>button.</p>
<p class=TODO
style="margin-left: 40px;">&nbsp;</p>
<p>&nbsp;</p>
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<h1>Using operations on groups</h1>
<p><span style="font-weight: bold;"><B><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> </B></span>In SMESH you can
perform &nbsp;Boolean
operations on groups such as:</p>
<p>&nbsp;</p>
<ul type="disc" class="whs2">
<li class=kadov-p><p class="whs3"><a href="#Union">Union</a>
</p></li>
<li class=kadov-p><p class="whs3"><a href="#Intersection">Intersection</a></p></li>
<li class=kadov-p><p class="whs3"><a href="#Cut">Cut</a></p></li>
</ul>
<p>&nbsp;</p>
<h3><a name=Union></a>Union of two groups</h3>
<p>This operation allows to create a new group in such a way that all mesh
elements that are present in the initial groups will be added to the new
one.</p>
<p>&nbsp;</p>
<p class=TODO>To union two groups:</p>
<p class=TODO>&nbsp;</p>
<p class="whs4">1. In the <span style="font-weight: bold;"><B>Mesh
</B></span>menu select the <span style="font-weight: bold;"><B>Union Groups </B></span>item.
The following dialog box will appear:</p>
<p class="whs4">&nbsp;</p>
<p class="whs4"><img src="../image77.gif" width="290px" height="245px" border="0" class="img_whs5"></p>
<p>&nbsp;</p>
<p class="whs4">In this dialog box you should specify the
name<span style="font-weight: bold;"> <B></B></span>of the resulting group and
two groups which will be united.</p>
<p class="whs4">&nbsp;</p>
<p class="whs4">2. Click the <span style="font-weight: bold;"><B>OK
</B></span>or <span style="font-weight: bold;"><B>&nbsp;Apply
</B></span>button to confirm creation of the group. </p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<h3><a name=Intersection></a>Intersection of two groups</h3>
<p>This operation allows to create a new group in such a way that all mesh
elements that are present in both initial groups are added to the new
one.</p>
<p>&nbsp;</p>
<p class=TODO>To intersect two groups:</p>
<p class=TODO>&nbsp;</p>
<p class="whs4">1. In the <span style="font-weight: bold;"><B>Mesh
</B></span>menu select the <span style="font-weight: bold;"><B>Intersect Groups
</B></span>item. The following dialog box will appear:</p>
<p class="whs4">&nbsp;</p>
<p class="whs4"><img src="../image76.gif" width="290px" height="245px" border="0" class="img_whs5"></p>
<p>&nbsp;</p>
<p class="whs4">In this dialog box you should specify the
name<span style="font-weight: bold;"> <B></B></span>of the resulting group and
two groups which will be intersected.</p>
<p class="whs4">&nbsp;</p>
<p class="whs4">2. Click the <span style="font-weight: bold;"><B>OK
</B></span>or <span style="font-weight: bold;"><B>&nbsp;Apply
</B></span>button to confirm creation of the group. </p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<h3><a name=Cut></a>Cut of two groups</h3>
<p>This operation allows to create a new group in such a way that all mesh
elements that are present in the main group but are absent in the tool
group are added to the new one.</p>
<p>&nbsp;</p>
<p class=TODO>To cut two groups:</p>
<p class=TODO>&nbsp;</p>
<p class="whs4">1. In the <span style="font-weight: bold;"><B>Mesh
</B></span>menu select the <span style="font-weight: bold;"><B>Cut Groups </B></span>item.
The following dialog box will appear:</p>
<p class="whs4">&nbsp;</p>
<p class="whs4"><img src="../image75.gif" width="290px" height="244px" border="0" class="img_whs6"></p>
<p>&nbsp;</p>
<p class="whs4">In this dialog box you should specify the
name<span style="font-weight: bold;"> <B></B></span>of the resulting group and
two groups which will be cut.</p>
<p class="whs4">&nbsp;</p>
<p class="whs4">2. Click the <span style="font-weight: bold;"><B>OK
</B></span>or <span style="font-weight: bold;"><B>&nbsp;Apply
</B></span>button to confirm creation of the group. &nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
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