<?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 = "topic"/><meta name = "abstract" content = "Tosca Structure.shape is used for the optimization of already detailed designs. Thus, a detailed and realistic analysis model is required for reliable optimization results. SIMULIA Tosca Structure allows optimization in combination of nonlinear or contact analysis to avoid error prone model simplifications. This chapter describes these advanced features used for shape optimization."/><meta name = "description" content = "Tosca Structure.shape is used for the optimization of already detailed designs. Thus, a detailed and realistic analysis model is required for reliable optimization results. SIMULIA Tosca Structure allows optimization in combination of nonlinear or contact analysis to avoid error prone model simplifications. This chapter describes these advanced features used for shape optimization."/><meta name = "DC.format" content = "HTML5"/><meta name = "DC.identifier" content = "tso-m-usr-shape-advanced-sb"/><meta name = "DC.language" content = "en"/><link rel = "stylesheet" type = "text/css" href = "../DSDocUI_XML34.css"/><title>Advanced Tosca Structure.shape Optimizations</title>
<script type = "text/javascript" src = "../DSDocUI_Highlight34.js">
  	/* */
  	</script></head><body onLoad = "highlightSearchTerms();" id = "tso-m-usr-shape-advanced-sb">
<a name = "hj-top"> </a><table class = "table1" id = "table11"><tr><td><table class = "DocHeader"><tr><td class = "DocHeader1" colspan = "2"><h1>
Advanced <span class = "ph">Tosca Structure.shape</span>
Optimizations
</h1></td></tr><tr><td class = "DocHeader4" colspan = "2"/></tr><tr><td class = "DocHeader3" colspan = "2"><table class = "DocThemeIntro" id = "table12"><tr><td class = "Intro1"><p class = "header"><p class = "abstract">
<span class = "shortdesc">
<span class = "ph">Tosca Structure.shape</span>
is used for the optimization of already detailed designs. Thus, a detailed
and realistic analysis model is required for reliable optimization results.
<span class = "ph">SIMULIA Tosca Structure</span>
allows optimization in combination of nonlinear or contact analysis
to avoid error prone model simplifications. This chapter describes these
advanced features used for shape optimization.
</span>

</p>

</p><hr class = "header"/></td></tr><tr><td class = "Intro2"><span class = "run-in">In this section:</span><br/><ul class = "ulthemes"><li><a title = "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." href = "tso-t-usr-shape-advanced-nonLin.htm">Highly Nonlinear Shape Optimization</a></li><li><a title = "Another special usage of Tosca Structure.shape controller algorithm is the optimization of contact zones. Here it is important to understand that the normal shape optimization must be reversed because growth in a contact zones will result in a higher contact pressure and shrinkage in a lower. This is done by changing the setting SCALE in OPT_PARAM to a negative value, usually a small negative value, for example, -0.001." href = "tso-t-usr-shape-advanced-contact.htm">Minimizing Contact Pressure</a></li></ul></td></tr></table></td></tr></table>




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