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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>&nbsp;</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>&nbsp;</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>&nbsp;</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>&nbsp;</p>

<p>&nbsp;</p>

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