<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html
  SYSTEM "about:legacy-compat">
<html xmlns:mml = "http://www.w3.org/1998/Math/MathML" lang = "en"><head><meta charset = "UTF-8"/><meta name = "copyright" content = "(C) Copyright 2020"/><meta name = "DC.rights.owner" content = "(C) Copyright 2020"/><meta name = "DC.type" content = "concept"/><meta name = "abstract" content = "Within this section supported analysis types are discussed and the corresponding settings are explained."/><meta name = "description" content = "Within this section supported analysis types are discussed and the corresponding settings are explained."/><meta name = "DC.format" content = "HTML5"/><meta name = "DC.identifier" content = "tso-c-usr-solver-ansys-analysis"/><meta name = "DC.language" content = "en"/><link rel = "stylesheet" type = "text/css" href = "../DSDocUI_XML34.css"/><title>Analysis Types</title>
<script type = "text/javascript" src = "../DSDocUI_Highlight34.js">
  	/* */
  	</script></head><body onLoad = "highlightSearchTerms();" id = "tso-c-usr-solver-ansys-analysis">
<a name = "hj-top"> </a><table class = "table1" id = "table11"><tr><td><table class = "DocHeader"><tr><td class = "DocHeader1" colspan = "2"><h1>Analysis Types</h1></td></tr><tr><td class = "DocHeader4" colspan = "2"/></tr><tr><td class = "DocHeader3" colspan = "2"><table class = "DocThemeIntro" id = "table12"><tr><td class = "Intro1Only"><p class = "header"><p class = "abstract">
<span class = "shortdesc">Within this section supported analysis types are discussed and the corresponding settings
   are explained.</span>

</p>
<p>This page discusses: </p><ul><li><a href = "#tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-geomnonlin" id = "toc_rg" title = "">Nonlinear Analysis</a></li><li><a href = "#tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt" id = "toc_rg" title = "">Allowed Analysis Types for Sensitivity-Based Optimizations</a></li></ul>
</p></td></tr></table></td></tr></table>




<div class = "body conbody">
<div class = "section" id = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-geomnonlin"><h2 class = "title sectiontitle">Nonlinear Analysis</h2>

<p>Geometric nonlinear analysis (parameter <code class = "ph codeph">NLGEOM</code>) is only supported in
    controller-based topology, bead, and shape optimization.</p>
<p>The same applies for contact formulations and nonlinear material properties.</p>
</div>


<div class = "section" id = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt"><p><map name = "FPMap1"><area href = "#hj-top" title = "Back to Top" shape = "rect" coords = "416, 0, 435, 10"/></map><span class = "itemsprite"/></p><h2 class = "title sectiontitle">Allowed Analysis Types for Sensitivity-Based Optimizations</h2>

<p>The responses from the two following analysis types in <span class = "ph">ANSYS®</span>
are allowed for sensitivity-based topology optimization:</p>
<ul class = "ul">
<li class = "li"><code class = "ph codeph">ANTYPE,0</code></li>
<li class = "li"><code class = "ph codeph">ANTYPE,2</code></li>
</ul>
<table class = "table"><caption/><colgroup><col/><col/><col/><col/><col/></colgroup><thead class = "thead">
<tr class = "row">
<th class = "entry" id = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__1"><p>Solution types</p></th>
<th class = "entry" id = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__2"><p>TOPO</p></th>
<th class = "entry" id = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__3"><p>SHAPE</p></th>
<th class = "entry" id = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__4"><p>BEAD</p></th>
<th class = "entry" id = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__5"><p>SIZING</p></th>
</tr>
</thead><tbody class = "tbody">
<tr class = "row">
<td class = "entry" headers = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__1"><p>ANTYPE,0</p>
                      <p>Linear static</p></td>
<td class = "entry" headers = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__2"><p>C, S</p></td>
<td class = "entry" headers = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__3"><p>C, S</p></td>
<td class = "entry" headers = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__4"><p>C, S</p></td>
<td class = "entry" headers = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__5"><p>S</p></td>
</tr>
<tr class = "row">
<td class = "entry" headers = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__1"><p>ANTYPE,2</p>
                      <p>Modal analysis</p></td>
<td class = "entry" headers = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__2"><p>C, S</p></td>
<td class = "entry" headers = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__3"><p>C, S</p></td>
<td class = "entry" headers = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__4"><p>C, S</p></td>
<td class = "entry" headers = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__5"><p>S</p></td>
</tr>
  <tr class = "row">
<td class = "entry" headers = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__1"><p>with nonlinearities</p></td>
<td class = "entry" headers = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__2"><p>C</p></td>
<td class = "entry" headers = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__3"><p>C</p></td>
<td class = "entry" headers = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__4"><p>C</p></td>
<td class = "entry" headers = "tso-c-usr-solver-ansys-analysis__tso-c-usr-solver-ansys-analysis-sensbasedopt__entry__5"/>
</tr>
</tbody></table>
<p><ul class = "ul">
<li class = "li">C = controller-based optimizations</li>
<li class = "li">S = sensitivity-based optimizations</li>
</ul></p>
<p>Only one set of the command <code class = "ph codeph">LSSOLVE</code> is allowed in each
finite element file (<code class = "ph codeph">CDB</code>). In addition, the <span class = "ph">load case</span>
should be specified in an order starting from 1 and then the numbering
should be chronologically increasing. The <span class = "ph">load case</span>
are referred in the parameter file using the number of the <span class = "ph">load case</span>.</p>
<p>For example, if two static <span class = "ph">load case</span> (<code class = "ph codeph">LSSOLVE,1,2,1</code> and <code class = "ph codeph">ANTYPE,0</code> in
     <code class = "ph codeph">file_fe_static.s01</code> and <code class = "ph codeph">file_fe_static.s02</code>) are defined in the
    file <code class = "ph codeph">file_fe_static_1.cdb</code> and two eigenfrequency <span class = "ph">load case</span> (<code class = "ph codeph">LSSOLVE,1,2,1</code> and <code class = "ph codeph">ANTYPE,2</code> in
     <code class = "ph codeph">file_fe_dynamic.s01</code> and <code class = "ph codeph">file_fe_dynamic.s02</code>) are defined in
    the <code class = "ph codeph">file_fe_dynamic_1.cdb</code>, they are defined in the parameter file like:</p>
<pre class = "codeblock">
<code class = "ph codeph">
FEM_INPUT
 ID_NAME = Two_files
 FILE = file_fe_static.cdb
 FILE = file_fe_dynamic.cdb
END_
</code>
</pre>
<p>and the two static responses can be referred to as: </p>
<pre class = "codeblock">
<code class = "ph codeph">
DRESP
 ...
 LC_SET = STATIC,1,
 ...
END_
</code>
</pre>
<p>and</p>
<pre class = "codeblock">
<code class = "ph codeph">
DRESP
 ...
 LC_SET = STATIC,2,
 ...
END_
</code>
</pre>
<p>and the two modal frequency responses can be referred to like: </p>
<pre class = "codeblock">
<code class = "ph codeph">
DRESP
 ...
 LC_SET = MODAL,10001,...
 ...
END_
</code>
</pre>
<p>and</p>
<pre class = "codeblock">
<code class = "ph codeph">
DRESP
 ...
 LC_SET = MODAL,10002,.....
 ...
END_
</code>
</pre>
<table class = "Remark" id = "table132"><tr><td class = "Remark"><span class = "run-in.important">Important:
				</span><span class = "notecontent"><p><ul class = "ul">
<li class = "li">Significant improvement in the CPU-time is obtained using the following
command in each <span class = "ph">load case</span>:
<pre class = "codeblock">
<code class = "ph codeph">
OUTPR,ALL,NONE !No output in ASCII format
</code>
</pre>  

<p>This ensures that no ASCII information is written as output. Therefore, adding
this command in each <span class = "ph">load case</span>
is strongly recommended.</p></li>
<li class = "li">When <span class = "ph">two or more finite element input files (<code class = "ph codeph">CDB</code>)</span>
are referred in the <code class = "ph codeph">FEM_INPUT</code> command, the
<span class = "ph">ANSYS®</span>
command <code class = "ph codeph">/FILNAME, &lt;name&gt;, 1</code> must be added in
all finite element input files (<code class = "ph codeph">CDB</code>) for uniquely defining
the <span class = "ph">load case</span>
for each finite element input file (<code class = "ph codeph">CDB</code>).</li>
<li class = "li">When only one finite element input file (<code class = "ph codeph">CDB</code>)
is referred in the command <code class = "ph codeph">FEM_INPUT</code>, the <span class = "ph">ANSYS®</span>
command <code class = "ph codeph">/FILNAME, &lt;name&gt;, 1</code> does not must be
added in the finite element input file (<code class = "ph codeph">CDB</code>). However,
then the <span class = "ph">load case</span>
files must be named <code class = "ph codeph">file.s01, file.s02, file.s03</code>,
etc.</li>
 <li class = "li"> In a case of analyses where boundary conditions are read from another <span class = "ph">ANSYS®</span> analysis (for example, when a TEMPERATURE FILE is included), set the environment variable
       as<pre class = "codeblock">
<code class = "ph codeph">
ansys_keep_result_requests=1
</code>
</pre>so that <span class = "ph">Tosca</span> reads all the <span class = "ph">load cases</span> or timesteps from the first analysis. </li>
</ul></p></span></td></tr></table>

</div>


</div>

</td></tr></table><script type = "text/javascript" src = "../DSDocUI_Bottom34.js">/* */</script></body>
</html>
