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      <title>Check criteria - Self-Intersecting Shell Check (G-SH-IS)</title>
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      <div class="title_topic4" id="xps10_pagetitle">Check criteria - Self-Intersecting Shell Check (G-SH-IS)</div>
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               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('nx_analysis/vda_checker.html');return(false);">Check VDA-4955 Compliance Overview</a></p>
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               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('nx_analysis/vda_criteria.html');return(false);">Description of the Check Criteria</a></p>
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               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('nx_analysis/vda4955_check_crit_fac_topo.html');return(false);">Faces (Topology)</a></p>
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               <p class="para_td">Self-Intersecting Shell Check (G-SH-IS)</p>
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               <p class="para_td">Input</p>
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               <p class="para_td">Faces, solid bodies, and sheet bodies</p>
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               <p class="para_td">Parameter</p>
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               <p class="para_td">Self intersection distance</p>
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               <p class="para_td">What is analyzed?</p>
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               <p class="para_td">Using the selected face set, the VDAC module first constructs the face topology and identifies the connected shell regions. Within each shell, the checker validates whether any faces of the shell intersect at locations other than the edges within the given measurement accuracy.</p>
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               <p class="para_td">Results Log&nbsp; output</p>
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                        <p class="para_td">G-SH-IS</p>
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                        <p class="para_td">Object id of face 1 that intersects the other faces</p>
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                        <p class="para_td">Object id of face 2 that intersects face 1</p>
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                        <p class="para_td">Minimum intersection distance</p>
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                        <p class="para_td">Intersection point</p>
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                        <p class="para_td">(U,V) face 1 parameters at the intersection point</p>
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                        <p class="para_td">(U,V) face 2 parameters at the intersection point</p>
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