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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>About the Clip Example</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 = "shortdesc">This example illustrates a plastic clip that is used to fix a
variety of objects.<p>This page discusses: </p><ul><li><a href = "#tso-c-example-shape-clip__cs-model" id = "toc_rg" title = "">About the Model</a></li><li><a href = "#tso-c-example-shape-clip__cs-summary" id = "toc_rg" title = "">Procedure Summary</a></li></ul>
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    <div class = "section" id = "tso-c-example-shape-clip__cs-model"><h2 class = "title sectiontitle">About the Model</h2>
    The maximum stress is found on the inner side of the clip.<p>
<br/><img class = "image" src = "../TsoExampleImages/shapeClipModel.png"/><br/></p><p>The aim of optimization is to reduce the stresses without changing
the contour of the inner side. Only nodes on the outer side are to
be designed. The stress level is very low at the tips. Therefore, an
optimization without restrictions would result in these
low-stressed areas shrinking. Thus, two cylindrical frozen areas
are defined at the tips.
</p><p><br/><img class = "image" src = "../TsoExampleImages/shapeClipGroups.png"/><br/></p>
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    <div class = "section" id = "tso-c-example-shape-clip__cs-summary"><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 sectiontitle">Procedure Summary</h2>
    
    <p>
    <table class = "table"><caption/><colgroup><col style = "width:13.071895424836603%"/><col style = "width:86.9281045751634%"/></colgroup><tbody class = "tbody"><tr class = "row"><td class = "entry">Model:</td><td class = "entry">clip.ext
</td></tr><tr class = "row"><td class = "entry">Design Area:</td><td class = "entry">Node group DV_NODES

</td></tr><tr class = "row"><td class = "entry">CS_DEF
</td><td class = "entry">New rectangular coordinate system, defined by rotating the global
CS by 45° around the global z-axis

</td></tr><tr class = "row"><td class = "entry">CS_DEF
</td><td class = "entry">New cylindrical coordinate system, defined by translating the
previously defined rectangular CS to origin with coordinates
(23,23,0)
</td></tr><tr class = "row"><td class = "entry">CS_DEF
</td><td class = "entry">New cylindrical coordinate system, defined by translating the
previously defined rectangular CS to origin with coordinates
(23,-23,0)
</td></tr><tr class = "row"><td class = "entry">Design Variable Constraint:</td><td class = "entry">Two solid body boundaries for the design nodes


</td></tr><tr class = "row"><td class = "entry">Design Variable Constraint:</td><td class = "entry">Fixation of all displacements for the node group NODES_FIX_ALL

</td></tr><tr class = "row"><td class = "entry">Design Variable Constraint:</td><td class = "entry">Fixation of the displacement along the global z-axis for the node group
<span class = "ph uicontrol">nodes_fix_z</span>
</td></tr><tr class = "row"><td class = "entry">Design Variable Constraint:</td><td class = "entry">Maximal growth and shrinkage of 6 mm for the design nodes
</td></tr><tr class = "row"><td class = "entry">Mesh Smooth:</td><td class = "entry">Mesh smoothing of all elements, while free surface nodes remain
free
</td></tr><tr class = "row"><td class = "entry">Objective:</td><td class = "entry">Minimize the maximal von Mises stresses in the design area

</td></tr><tr class = "row"><td class = "entry">Stop Condition
</td><td class = "entry">The global stop condition is set to 5 iterations
</td></tr></tbody></table></p>
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