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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>Notch Optimizing with Fixed Reference Value</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 full control over the <span class = "ph">Tosca Structure.shape</span>
controller the user might prescribe a fixed reference value. This can be
used to force the homogenization to around a certain value.
</span>

</p>
<p>This task shows you how to:
					</p><ul><li><a href = "#tso-t-usr-shape-staAna-fixedRefVal-gui" id = "toc_rg" title = "">
Notch Optimize in <span class = "ph">Tosca Structure.gui</span>
</a></li><li><a href = "#tso-t-usr-shape-staAna-fixedRefVal-cmd" id = "toc_rg" title = "">
<span class = "ph">Tosca Structure</span>
Parameter File
</a></li></ul>
</p></td></tr></table></td></tr></table>





<div class = "body taskbody">
<div class = "section context"><p class = "context"><span class = "run-in.context">Context: </span>
<table class = "Remark" id = "table132"><tr><td class = "Remark"><span class = "run-in.important">Important:
				</span><span class = "notecontent">
<p>
This is not a stress constraint. It
is simply a way to gain more influence over the shape controller.
</p>
</span></td></tr></table>

<p> The effect is clearly seen in the following figure:</p>
<table class = "table" id = "tso-t-usr-shape-staAna-fixedRefVal__ae233507"><caption/><colgroup><col/></colgroup><tbody class = "tbody">
<tr class = "row">
<td class = "entry">
<br/><img class = "image" src = "../TsoUserImages/shape_holeplate_refstress.png" width = "474" height = "192"/><br/>
</td>
</tr>
</tbody></table>
<p>
The hole plate example is considered with a reference value of 70 N/mm
and 120 N/mm:
</p>
<ul class = "ul">
<li class = "li">A low reference value enforces more growth</li>
<li class = "li">A high reference value enforces more shrinkage</li>
</ul>
</p></div>

</div>


<article class = "topic task nested1" aria-labelledby = "ariaid-title2" id = "tso-t-usr-shape-staAna-fixedRefVal-gui">
<h2 class = "title topictitle2">
Notch Optimize 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;</span>  <span class = "ph uicontrol">OBJ_FUNC</span>.

<div class = "itemgroup stepresult">The OBJ_FUNC dialog appears.</div>
</li><li class = "li step stepexpand">

Select <span class = "ph uicontrol">Target= MinMax</span>.

</li><li class = "li step stepexpand">

Set <span class = "ph uicontrol">RefValue</span> to 120.<br/><img class = "image" src = "../TsoUserImages/shape_obj_func_minmax_gui.png" width = "450"/><br/>

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

</article>

<article class = "topic task nested1" aria-labelledby = "ariaid-title3" id = "tso-t-usr-shape-staAna-fixedRefVal-cmd">
<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">
OBJ_FUNC
 ID_NAME        = MY_OBJ_FUNC
 TARGET         = MINMAX
 DRESP          = DRESP_VON_MISES, , 120.
END_
</code>
</pre>
</p>
</div></section>
</div>

</article>
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