<?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 = "task"/><meta name = "abstract" content = "Shell thicknesses can be controlled to vary between a lower or upper bound"/><meta name = "description" content = "Shell thicknesses can be controlled to vary between a lower or upper bound"/><meta name = "DC.relation" scheme = "URI" content = "../TsoCmdMap/tso-r-cmd-dvconSizing.htm#tso-r-cmd-dvconSizing"/><meta name = "DC.format" content = "HTML5"/><meta name = "DC.identifier" content = "tso-t-usr-sizing-manuCond-shellThickBound"/><meta name = "DC.language" content = "en"/><link rel = "stylesheet" type = "text/css" href = "../DSDocUI_XML34.css"/><title>Defining a Shell Thickness Bound</title>
<script type = "text/javascript" src = "../DSDocUI_Highlight34.js">
  	/* */
  	</script></head><body onLoad = "highlightSearchTerms();" id = "tso-t-usr-sizing-manuCond-shellThickBound">
<a name = "hj-top"> </a><table class = "table1" id = "table11"><tr><td><table class = "DocHeader"><tr><td class = "DocHeader1" colspan = "2"><h1>Defining a Shell Thickness Bound</h1></td></tr><tr><td class = "DocHeader4" colspan = "2"/></tr><tr><td class = "DocHeader3"><table class = "DocHeaderIntro" id = "table12"><tr><td class = "Intro1Only"><p class = "header"><p class = "abstract">
<span class = "shortdesc">Shell thicknesses can be controlled to vary between a lower or upper
bound</span>
(<code class = "ph codeph">CHECK_TYPE = THICKNESS_BOUNDS</code>). For the definition
of the thickness bounds, either an absolute  or relative value for the
upper and lower bound can be defined. In case of relative bounds a real
number is specified for each bound which is multiplied with the initial
value for the shell thickness to get the absolute upper and lower bounds.
</p>
<p>This task shows you how to:
					</p><ul><li><a href = "#tso-t-usr-sizing-manuCond-frozAreaDef-gui" id = "toc_rg" title = ""> Define Thickness Bounds in <span class = "ph">Tosca Structure.gui</span></a></li><li><a href = "#tso-t-usr-sizing-manuCond-frozAreaDef-parFile" id = "toc_rg" title = "">  Parameter File</a></li></ul>
</p></td></tr></table></td><td class = "DocHeader2"><table class = "DocTopicsSeeAlso" id = "table13"><tr><td class = "TopicsTitle">See Also</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 sizing optimization." href = "../TsoCmdMap/tso-r-cmd-dvconSizing.htm#tso-r-cmd-dvconSizing">DVCON_SIZING</a></td></tr></table></td></tr></table>




<div class = "body taskbody">
<div class = "section context"><p class = "context"><span class = "run-in.context">Context: </span>
<p>Shell thicknesses can be controlled to vary between a lower or upper
bound (<code class = "ph codeph">CHECK_TYPE = THICKNESS_BOUNDS</code>). For the definition
of the thickness bounds, either an absolute  or relative value for the
upper and lower bound can be defined. In case of relative bounds a real
number is specified for each bound which is multiplied with the initial
value for the shell thickness to get the absolute upper and lower bounds.</p>
<p>The parameter <code class = "ph codeph">MAGNITUDE</code> defines if the lower and
upper bound are defined as absolute or relative values.</p>
</p></div>

</div>

<div class = "related-links"/>

<article class = "topic task nested1" aria-labelledby = "ariaid-title2" id = "tso-t-usr-sizing-manuCond-frozAreaDef-gui">
<h2 class = "title topictitle2"> Define Thickness Bounds in <span class = "ph">Tosca Structure.gui</span></h2>

<div class = "body taskbody"><section><ol class = "ol steps"><li class = "li step">
Choose <span class = "ph uicontrol">Command &gt; DVCON_SIZING</span> in <span class = "ph">Tosca Structure.pre</span>
screen.</li><li class = "li step">Apply an <span class = "ph uicontrol">ID_NAME</span> and select the
element group that is to be frozen. If the element group is not already defined, it is necessary
to define it in advance using the <code class = "ph codeph">GROUP_DEF</code> command.</li><li class = "li step">Choose <span class = "ph uicontrol">Type = Thickness_bounds</span> and define a relative (<span class = "ph uicontrol">REL</span>)
or absolute (<span class = "ph uicontrol">ABS</span>) upper and lower value:
<br/><img class = "image" src = "../TsoUserImages/size_dvcon_sizing_thicknessbounds.png" width = "450"/><br/></li></ol></section></div>
</article>

<article class = "topic task nested1" aria-labelledby = "ariaid-title3" id = "tso-t-usr-sizing-manuCond-frozAreaDef-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">  Parameter File</h2>

<div class = "body taskbody">
<section><div class = "li step p">
The resulting command looks like:
<div class = "itemgroup stepresult">
<pre class = "codeblock">
<code class = "ph codeph">DVCON_SIZING
  ID_NAME     = dvcon_thickness_bounds
  EL_GROUP    = <span class = "ph">my_group</span> 
  CHECK_TYPE  = THICKNESS_BOUNDS
  MAGNITUDE   = REL/ABS 
  LOWER_BOUND = …
  UPPER_BOUND = …
END_
</code>
</pre>
</div>
</div></section>
</div>

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