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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>Defining a  Maximum Truss Thickness (Maximum Member Size)</h1></td></tr><tr><td class = "DocHeader4" colspan = "2"/></tr><tr><td class = "DocHeader3"><table class = "DocHeaderIntro" id = "table12"><tr><td class = "Intro1"><p class = "header"><p class = "abstract">
<span class = "shortdesc"> You can define a maximum truss thickness to design castable components.  This
               restriction avoids thick parts are avoided by splitting them into several thinner
               parts. </span>

</p>
<p>This task shows you how to:
					</p><ul><li><a href = "#tso-t-user-TopOpt-DesArea-MaxMS-gui" id = "toc_rg" title = "">
Define a Maximum Member Size in <span class = "ph">Tosca Structure.gui</span>
</a></li></ul>
</p></td></tr><tr><td class = "Intro2"><hr class = "header"/><span class = "run-in-beforeyoubegin">Before you begin: </span>
The maximum member size constraint can only be used with the sensitivity-based
algorithm. Maximum member size constraints with the controller algorithm
are not supported.
</td></tr></table></td><td class = "DocHeader2"><table class = "DocTopicsSeeAlso" id = "table13"><tr><td class = "TopicsTitle">See Also</td></tr><tr><td><a title = "The maximum and minimum member size restrictions prevent parts of the model from becoming too thick or too thin." href = "tso-c-user-TopOpt-DesArea-MemberSizeContr.htm#tso-c-user-TopOpt-DesArea-MemberSizeContr">About Member Size Control</a></td></tr></table><table class = "DocTopicsInOtherGuides" id = "table14"><tr><td height = "8px"/></tr><tr><td class = "TopicsTitleNormal">In Other Guides</td></tr><tr><td><a title = "Defines restrictions of the design variables in topology optimization." href = "../TsoCmdMap/tso-r-cmd-dvconTopo.htm#tso-r-cmd-dvconTopo">DVCON_TOPO</a></td></tr></table></td></tr></table>




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<article class = "topic task nested1" aria-labelledby = "ariaid-title2" id = "tso-t-user-TopOpt-DesArea-MaxMS-gui">
<h2 class = "title topictitle2">
Define a Maximum Member Size 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 menucascade"><span class = "ph uicontrol">Command</span><abbr title = "and then"> &gt; </abbr><span class = "ph uicontrol">DVCON_TOPO</span></span> in <span class = "ph">Tosca Structure.pre</span>.

</li><li class = "li step stepexpand">
Define the Maximum Member Size as shown in the following figure: 
     <br/><img class = "image" id = "tso-t-user-TopOpt-DesArea-MaxMS-gui__image_312C6A22E42B406ABEEED89E64E038D6" src = "../TsoUserImages/ag096cf4.png" width = "600"/><br/>

</li><li class = "li step stepexpand">
Or use the <code class = "ph codeph">DVCON_TOPO</code> command:

<p>
<pre class = "codeblock">
<code class = "ph codeph">
DVCON_TOPO
  ID_NAME       = &lt;Name of DVCON object&gt;
  EL_GROUP      = &lt;Element group to be restricted&gt;
  CHECK_TYPE    = MAX_MEMBER
  THICKNESS     = &lt;Maximum thickness of structures&gt;
  MIN_THICKNESS = &lt;Minimum thickness of structures&gt;
  DISTANCE      = &lt;Distance between structural members&gt;
  METHOD        = FILTER | LOCAL_VOLUME
END_
</code>
</pre>
</p>
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