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<a name = "hj-top"> </a><table class = "table1" id = "table11"><tr><td><table class = "DocHeader"><tr><td class = "DocHeader1" colspan = "2"><h1>Highly Nonlinear Shape Optimization</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">
For highly nonlinear calculations, the stress measure is not
always a good indicator, for example, a structure under plastic deformations will
(for ideal plastic) have a large constant stress over the plastic area.
For this reason, most analysts use a strain measure to inspect these
areas.
</span>

<p><span class = "ph">Tosca Structure.shape</span>
optimization supports different strain measures for this purpose, currently
only supported by 
<a class = "xref" href = "tso-m-usr-solver-abaqus-sb.htm#tso-m-usr-solver-abaqus-sb" title = "Within this section, the Abaqus solver is considered. All relevant file name conventions and settings are explained.">Abaqus</a>
and 
<a class = "xref" href = "tso-m-usr-solver-ansys-sb.htm#tso-m-usr-solver-ansys-sb" title = "Within this section, the ANSYS® solver is considered. All relevant file name conventions and settings are explained.">ANSYS®</a>.
</p>
</p>
<p>This task shows you how to:
					</p><ul><li><a href = "#tso-t-usr-shape-advanced-nonLin-gui" id = "toc_rg" title = "">
Define a strain measure in <span class = "ph">Tosca Structure.gui</span>
</a></li><li><a href = "#tso-t-usr-shape-advanced-nonLin-parFile" id = "toc_rg" title = "">
<span class = "ph">Tosca Structure</span>
Parameter File
</a></li></ul>
</p></td></tr></table></td></tr></table>




<article class = "topic task nested1" aria-labelledby = "ariaid-title2" id = "tso-t-usr-shape-advanced-nonLin-gui">
<h2 class = "title topictitle2">
Define a strain measure in <span class = "ph">Tosca Structure.gui</span>
</h2>

<div class = "body taskbody">
<section><ol class = "ol steps"><li class = "li step stepexpand">

Choose <span class = "ph uicontrol">Command &gt; DRESP</span>.

<div class = "itemgroup stepresult">The DRESP menu appears.</div>
</li><li class = "li step stepexpand">

Choose <span class = "ph uicontrol">STRAIN_TOTAL</span> as type as shown in the following figure:
<br/><img class = "image" id = "tso-t-usr-shape-advanced-nonLin-gui__image_3D2E22774CE84F838CC2F8E816767C78" src = "../TsoUserImages/shape_straintotal_gui.png" width = "450"/><br/>

</li></ol></section>
</div>

</article>
<article class = "topic task nested1" aria-labelledby = "ariaid-title3" id = "tso-t-usr-shape-advanced-nonLin-parFile">
<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 topictitle2">
<span class = "ph">Tosca Structure</span>
Parameter File
</h2>

<div class = "body taskbody">
<section><div class = "li step p">

The resulting command in the parameter file look like
follows:

<p>

<pre class = "codeblock">
<code class = "ph codeph">
DRESP
 ID_NAME        = MY_DRESP
 DEF_TYPE       = SYSTEM
 TYPE           = STRAIN_TOTAL
 ND_GROUP       = design_nodes
 LC_SET         = ALL,1,All
 GROUP_OPER     = Max
END_
</code>
</pre>
</p>
</div></section>
</div>

</article>
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