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<title>About hypotheses</title>
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<h1>About hypotheses</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>Hypotheses</B></span> represent
boundary conditions which will be taken into account at calculations of
meshes or submeshes basing on geometrical objects. These hypotheses allow
you to manage the level of detail of the resulting meshes or submeshes:
when applying different hypotheses with different parameters you can preset
the quantity of meshing elements which will compose your mesh. So, it
will be possible to generate a rough or a more refined mesh or submesh.
</p>
<p> </p>
<p>In <span style="font-weight: bold;"><B>MESH </B></span>there are the following
Basic Hypotheses (to introduce them, you operate numerical values):</p>
<ul type="disc" class="whs2">
<li style="list-style: circle; /*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
type=circle
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>
<ul type="disc" class="whs2">
<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
class=kadov-p><p class="whs3"><a href="arithmetic_1d.htm#arithmetic_1D">Arithmetic 1D</a></p></li>
<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
class=kadov-p><p class="whs3"><a href="arithmetic_1d.htm#Average_length">Average Length</a></p></li>
<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
class=kadov-p><p class="whs3"><a href="arithmetic_1d.htm#deflection_1D">Deflection 1D </a></p></li>
<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
class=kadov-p><p class="whs3"><a href="arithmetic_1d.htm#Number_of_elements">Number of segments</a></p></li>
<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
class=kadov-p><p class="whs3"><a href="arithmetic_1d.htm#start_and_end_length">Start and end length</a></p></li>
<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
class=kadov-p><p class="whs3"><a href="arithmetic_1d.htm#automatic_length">Automatic Length</a></p></li>
</ul>
<li style="list-style: circle; /*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
type=circle
class=kadov-p><p class="whs3"><a href="max._element_area_hypothesis.htm">2D Hypotheses</a> (for meshing
of <span style="font-weight: bold;"><B>faces)</B></span>: </p></li>
</ul>
<ol type="disc" class="whs4">
<ul type="disc" class="whs2">
<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
class=kadov-p><p class="whs3"><a href="max._element_area_hypothesis.htm#max_element_area">Max Element Area</a></p></li>
<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
class=kadov-p><p class="whs3"><a href="max._element_area_hypothesis.htm#length_from_edges">Length from
Edges</a></p></li>
<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
class=kadov-p><p class="whs3"><a href="max._element_area_hypothesis.htm#quadrangle preference">Quadrangle
Preference</a></p></li>
</ul>
</ol>
<ul type="disc" class="whs2">
<li style="list-style: circle; /*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
type=circle
class=kadov-p><p class="whs3">3D
Hypothesis (for meshing of <span style="font-weight: bold;"><B>volumes)</B></span>:
</p></li>
<ul type="disc" class="whs2">
<li class=kadov-p><p><a href="max._element_volume_hypothsis.htm">Max
Element Volume</a></p></li>
</ul>
</ul>
<p> </p>
<p>There also exist some <a href="non_conform_mesh_allowed_hypothesis.htm">Additional
Hypotheses</a></p>
<ul type="disc" class="whs2">
<ul type="disc" class="whs2">
<li class=kadov-p><p>Propagation of 1D Hypothesis on opposite edges</p></li>
<li class=kadov-p><p>Non conform mesh allowed</p></li>
<li class=kadov-p><p>Quadratic mesh</p></li>
</ul>
</ul>
<p> </p>
<p>The choice of a hypothesis depends on:</p>
<ul type="disc" class="whs2">
<li class=kadov-p><p>the geometrical object (shape) which will be meshed</p></li>
<li class=kadov-p><p>the algorithm, which will be selected for meshing
of this geometrical object (shape)</p></li>
</ul>
<p> </p>
<p> </p>
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