doc/salome/gui/SMESH/files/about_hypotheses.htm

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 118 </script>\r
 119 <h1>About hypotheses</h1>\r
 120 \r
 121 <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>Hypotheses</B></span> represent \r
 122  boundary conditions which will be taken into account at calculations of \r
 123  meshes or submeshes basing on geometrical objects. These hypotheses allow \r
 124  you to manage the level of detail of the resulting meshes or submeshes: \r
 125  when applying different hypotheses with different parameters you can preset \r
 126  the quantity of meshing elements which will compose your mesh. So, it \r
 127  will be possible to generate a rough or a more refined mesh or submesh. \r
 128  In <span style="font-weight: bold;"><B>SMESH </B></span>there are the following \r
 129  basic hypotheses:</p>\r
 130 \r
 131 <p>&nbsp;</p>\r
 132 \r
 133 <ul type="disc" class="whs2">\r
 134         \r
 135         <li style="list-style: circle;"\r
 136                 type=circle\r
 137                 class=kadov-p><p class="whs3">For \r
 138  meshing of <span style="font-weight: bold;"><B>edges</B></span>:</p></li>\r
 139         \r
 140         <ul type="disc" class="whs2">\r
 141                 \r
 142                 <li class=kadov-p><p class="whs3"><a href="arithmetic_1d.htm">Arithmetic 1D</a></p></li>\r
 143                 \r
 144                 <li class=kadov-p><p class="whs3"><a href="local_length_hypothesis.htm">Average Length</a></p></li>\r
 145                 \r
 146                 <li class=kadov-p><p class="whs3"><a href="deflection_1d.htm">Deflection 1D</a> </p></li>\r
 147                 \r
 148                 <li class=kadov-p><p class="whs3"><a href="number_of_segments_hypothesis.htm">Number of segments</a></p></li>\r
 149                 \r
 150                 <li class=kadov-p><p class="whs3"><a href="propagation_of_1d_hypothesis_on_opposite_edges.htm">Propagation \r
 151  of 1D Hypothesis on opposite edges</a></p></li>\r
 152                 \r
 153                 <li class=kadov-p><p class="whs3"><a href="start_and_end_length_hypothesis.htm">Start and end length</a></p></li>\r
 154         </ul>\r
 155         \r
 156         <li style="list-style: circle;"\r
 157                 type=circle\r
 158                 class=kadov-p><p class="whs3">For \r
 159  meshing of <span style="font-weight: bold;"><B>faces</B></span>: </p></li>\r
 160 </ul>\r
 161 \r
 162 <ol type="disc" class="whs4">\r
 163         \r
 164         <ul type="disc" class="whs2">\r
 165                 \r
 166                 <li class=kadov-p><p class="whs3"><a href="length_from_edges.htm">Length from edges</a></p></li>\r
 167                 \r
 168                 <li class=kadov-p><p class="whs3"><a href="max._element_area_hypothesis.htm">Max Element Area</a></p></li>\r
 169                 \r
 170                 <li class=kadov-p><p class="whs3"><a href="non_conform_mesh_allowed_hypothesis.htm">Non conform mesh allowed</a></p></li>\r
 171         </ul>\r
 172 </ol>\r
 173 \r
 174 <ul type="disc" class="whs2">\r
 175         \r
 176         <li style="list-style: circle;"\r
 177                 type=circle\r
 178                 class=kadov-p><p class="whs3">For \r
 179  meshing of <span style="font-weight: bold;"><B>volumes</B></span>: </p></li>\r
 180         \r
 181         <ul type="disc" class="whs2">\r
 182                 \r
 183                 <li class=kadov-p><p><a href="max._element_volume_hypothsis.htm">Max \r
 184  Element Volume</a> &nbsp;</p></li>\r
 185         </ul>\r
 186 </ul>\r
 187 \r
 188 <p>&nbsp;</p>\r
 189 \r
 190 <p>&nbsp;</p>\r
 191 \r
 192 <p>The choice of a hypothesis depends on:</p>\r
 193 \r
 194 <p>&nbsp;</p>\r
 195 \r
 196 <ul type="disc" class="whs2">\r
 197         \r
 198         <li class=kadov-p><p>the geometrical object (shape) which will be meshed</p></li>\r
 199         \r
 200         <li class=kadov-p><p>the algorithm, which will be selected for meshing \r
 201  of this geometrical object (shape)</p></li>\r
 202 </ul>\r
 203 \r
 204 <p>&nbsp;</p>\r
 205 \r
 206 <p class="whs5"><a name=CreateHyp></a>To \r
 207  create a hypothesis </p>\r
 208 \r
 209 <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;\r
 210         font-size: 12pt;\r
 211         font-family: 'Arial Black', sans-serif;"> <font size=3 style="font-size:12pt;"><I></I></font></span><span style="font-weight: bold;"><B>Hypotheses \r
 212  &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>\r
 213 \r
 214 <p>The following menu will appear:</p>\r
 215 \r
 216 <p>&nbsp;</p>\r
 217 \r
 218 <p class="whs7"><img src="../image21.jpg" width="448px" height="367px" border="0" class="img_whs8"></p>\r
 219 \r
 220 <p>&nbsp;</p>\r
 221 \r
 222 <p>Select one of the menu items and click <span style="font-weight: bold;"><B>Create</B></span>. \r
 223  A data input dialog box corresponding to the chosen type of the hypotheses \r
 224  will appear. The created hypotheses shall appear in the Object Browser \r
 225  under the <span style="font-weight: bold;"><B>Hypotheses </B></span>folder:</p>\r
 226 \r
 227 <p>&nbsp;</p>\r
 228 \r
 229 <p>&nbsp;</p>\r
 230 \r
 231 <p class="whs7"><img src="../image42.jpg" width="271px" height="124px" border="0" class="img_whs9"></p>\r
 232 \r
 233 <p>&nbsp;</p>\r
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