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226 lines
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HTML
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226 lines
8.0 KiB
HTML
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<title>About hypotheses</title>
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<h1>About hypotheses</h1>
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<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
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boundary conditions which will be taken into account at calculations of
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meshes or submeshes basing on geometrical objects. These hypotheses allow
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you to manage the level of detail of the resulting meshes or submeshes:
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when applying different hypotheses with different parameters you can preset
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the quantity of meshing elements which will compose your mesh. So, it
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will be possible to generate a rough or a more refined mesh or submesh.
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In <span style="font-weight: bold;"><B>MESH </B></span>there are the following
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basic hypotheses:</p>
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<p> </p>
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<ul type="disc" class="whs2">
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<li style="list-style: circle; /*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
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type=circle
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class=kadov-p><p class="whs3">For
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meshing of <span style="font-weight: bold;"><B>edges</B></span>:</p></li>
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<ul type="disc" class="whs2">
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<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
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class=kadov-p><p class="whs3"><a href="arithmetic_1d.htm">Arithmetic 1D</a></p></li>
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<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
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class=kadov-p><p class="whs3"><a href="local_length_hypothesis.htm">Average Length</a></p></li>
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<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
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class=kadov-p><p class="whs3"><a href="../deflection_id_hypothesis.htm">Deflection 1D</a> </p></li>
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<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
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class=kadov-p><p class="whs3"><a href="number_of_segments_hypothesis.htm">Number of segments</a></p></li>
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<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
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class=kadov-p><p class="whs3"><a href="propagation_of_1d_hypothesis_on_opposite_edges.htm">Propagation
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of 1D Hypothesis on opposite edges</a></p></li>
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<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
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class=kadov-p><p class="whs3"><a href="start_and_end_length_hypothesis.htm">Start and end length</a></p></li>
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</ul>
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<li style="list-style: circle; /*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
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type=circle
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class=kadov-p><p class="whs3">For
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meshing of <span style="font-weight: bold;"><B>faces</B></span>: </p></li>
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</ul>
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<ul type="disc" class="whs2">
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<ul type="disc" class="whs2">
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<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
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class=kadov-p><p class="whs3"><a href="length_from_edges.htm">Length from edges</a></p></li>
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<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
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class=kadov-p><p class="whs3"><a href="max._element_area_hypothesis.htm">Max Element Area</a></p></li>
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<li style="/*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
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class=kadov-p><p class="whs3"><a href="non_conform_mesh_allowed_hypothesis.htm">Non conform mesh allowed</a></p></li>
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</ul>
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</ul>
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<ul type="disc" class="whs2">
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<li style="list-style: circle; /*begin!kadov{{*/ color: #000000; /*}}end!kadov*/ "
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type=circle
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class=kadov-p><p class="whs3">For
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meshing of <span style="font-weight: bold;"><B>volumes</B></span>: </p></li>
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<ul type="disc" class="whs2">
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<li class=kadov-p><p><a href="max._element_volume_hypothsis.htm">Max
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Element Volume</a> </p></li>
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</ul>
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</ul>
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<p> </p>
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<p> </p>
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<p>The choice of a hypothesis depends on:</p>
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<p> </p>
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<ul type="disc" class="whs2">
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<li class=kadov-p><p>the geometrical object (shape) which will be meshed</p></li>
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<li class=kadov-p><p>the algorithm, which will be selected for meshing
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of this geometrical object (shape)</p></li>
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</ul>
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<p> </p>
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<p class="whs4"><a name=CreateHyp></a>To
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create a hypothesis </p>
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<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;
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font-size: 12pt;
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font-family: 'Arial Black', sans-serif;"> <font size=3 style="font-size:12pt;"><I></I></font></span><span style="font-weight: bold;"><B>Hypotheses
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> </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>
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<p>The following menu will appear:</p>
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<p> </p>
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<p class="whs6"><img src="../image21.jpg" width="448px" height="367px" border="0" class="img_whs7"></p>
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<p> </p>
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<p>Select one of the menu items and click <span style="font-weight: bold;"><B>Create</B></span>.
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A data input dialog box corresponding to the chosen type of the hypotheses
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will appear. The created hypotheses shall appear in the Object Browser
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under the <span style="font-weight: bold;"><B>Hypotheses </B></span>folder:</p>
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<p> </p>
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<p> </p>
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<p class="whs6"><img src="../image42.jpg" width="271px" height="124px" border="0" class="img_whs8"></p>
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<p> </p>
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<p> </p>
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