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

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   6 <title>About hypotheses</title>\r
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  87 <h1>About hypotheses</h1>\r
  88 \r
  89 <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
  90  boundary conditions which will be taken into account at calculations of \r
  91  meshes or submeshes basing on geometrical objects. These hypotheses allow \r
  92  you to manage the level of detail of the resulting meshes or submeshes: \r
  93  when applying different hypotheses with different parameters you can preset \r
  94  the quantity of meshing elements which will compose your mesh. So, it \r
  95  will be possible to generate a rough or a more refined mesh or submesh. \r
  96  </p>\r
  97 \r
  98 <p>&nbsp;</p>\r
  99 \r
 100 <p>In <span style="font-weight: bold;"><B>MESH </B></span>there are the following \r
 101  Basic Hypotheses (to introduce them, you operate numerical values):</p>\r
 102 \r
 103 <ul type="disc" class="whs2">\r
 104         \r
 105         <li style="list-style: circle; /*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "\r
 106                 type=circle\r
 107                 class=kadov-p><p class="whs3"><a href="arithmetic_1d.htm">1D Hypotheses</a> (for meshing of <span style="font-weight: bold;"><B>edges)</B></span>:</p></li>\r
 108         \r
 109         <ul type="disc" class="whs2">\r
 110                 \r
 111                 <li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "\r
 112                         class=kadov-p><p class="whs3">Arithmetic \r
 113  1D</p></li>\r
 114                 \r
 115                 <li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "\r
 116                         class=kadov-p><p class="whs3">Average \r
 117  Length</p></li>\r
 118                 \r
 119                 <li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "\r
 120                         class=kadov-p><p class="whs3">Deflection \r
 121  1D </p></li>\r
 122                 \r
 123                 <li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "\r
 124                         class=kadov-p><p class="whs3">Number \r
 125  of segments</p></li>\r
 126                 \r
 127                 <li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "\r
 128                         class=kadov-p><p class="whs3">Start \r
 129  and end length</p></li>\r
 130         </ul>\r
 131         \r
 132         <li style="list-style: circle; /*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "\r
 133                 type=circle\r
 134                 class=kadov-p><p class="whs3">2D \r
 135  Hypothesis (for meshing of <span style="font-weight: bold;"><B>faces)</B></span>: \r
 136  </p></li>\r
 137 </ul>\r
 138 \r
 139 <ul type="disc" class="whs2">\r
 140         \r
 141         <ul type="disc" class="whs2">\r
 142                 \r
 143                 <li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "\r
 144                         class=kadov-p><p class="whs3"><a href="max._element_area_hypothesis.htm">Max Element Area</a></p></li>\r
 145         </ul>\r
 146 </ul>\r
 147 \r
 148 <ul type="disc" class="whs2">\r
 149         \r
 150         <li style="list-style: circle; /*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "\r
 151                 type=circle\r
 152                 class=kadov-p><p class="whs3">3D \r
 153  Hypothesis (for meshing of <span style="font-weight: bold;"><B>volumes)</B></span>: \r
 154  </p></li>\r
 155         \r
 156         <ul type="disc" class="whs2">\r
 157                 \r
 158                 <li class=kadov-p><p><a href="max._element_volume_hypothsis.htm">Max \r
 159  Element Volume</a></p></li>\r
 160         </ul>\r
 161 </ul>\r
 162 \r
 163 <p>&nbsp;</p>\r
 164 \r
 165 <p>There also exist some <a href="non_conform_mesh_allowed_hypothesis.htm">Additional \r
 166  Hypotheses</a></p>\r
 167 \r
 168 <ol type="disc" class="whs4">\r
 169         \r
 170         <ul type="disc" class="whs2">\r
 171                 \r
 172                 <li class=kadov-p><p>Propagation of 1D Hypothesis on opposite edges</p></li>\r
 173                 \r
 174                 <li class=kadov-p><p>Length from edges</p></li>\r
 175                 \r
 176                 <li class=kadov-p><p>Non conform mesh allowed</p></li>\r
 177         </ul>\r
 178 </ol>\r
 179 \r
 180 <p>&nbsp;</p>\r
 181 \r
 182 <p>The choice of a hypothesis depends on:</p>\r
 183 \r
 184 <ul type="disc" class="whs2">\r
 185         \r
 186         <li class=kadov-p><p>the geometrical object (shape) which will be meshed</p></li>\r
 187         \r
 188         <li class=kadov-p><p>the algorithm, which will be selected for meshing \r
 189  of this geometrical object (shape)</p></li>\r
 190 </ul>\r
 191 \r
 192 <p>&nbsp;</p>\r
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