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      <title>Check Criteria - Identical Face (M2)</title>
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      <div class="title_topic4" id="xps10_pagetitle">Check Criteria - Identical Face (M2)</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">Identical Face (M2)</p>
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               <p class="para_td">Input</p>
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               <p class="para_td">Faces of solid bodies and sheet bodies</p>
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               <p class="para_td">Parameter</p>
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               <p class="para_td">Lower limit constraint value of Identical distance</p>
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               <p class="para_td">What is analyzed ?</p>
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                     <td valign="top" align="left"><img align="left" src="../graphics/note.gif" alt="Note" title="Note"></td>
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                           <p class="para_note_body"> Within NX the information on duplicate faces will give more advantages to the customer compared to information on duplicate underlying surfaces (see Identical Surface (M2sf) ). That's why this criterion is inherited from version 1 of VDA Checker. Customers can choose which duplicates should be found (faces, surfaces or both). In case of checking for identical faces and identical surfaces it is likely to get some results twice (i.e. identical faces will match their underlying surface).</p>
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               <p class="para_td">Check if two faces are geometrically identical (for instance two cylinders which are only different in their position of the seam curve). According to version 3 of VDA 4955 an additional check will be performed to find face pairs where one completely overlaps the other (&quot;stamp on a letter&quot;). The criterion (M2f) is violated if a face pair either deviates less than the constraint value of Identical distance or differs in extent but one face is completely embedded within the other face.</p>
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               <p class="para_td"> <img align="bottom" src="graphics/v2fm2.gif" border="0">&nbsp;[IMG_4955]
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               <p class="para_th">Example of Embedded Faces</p>
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               <p class="para_td">Results Log&nbsp; Output</p>
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                        <p class="para_td">M2f</p>
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                        <p class="para_td">object_id</p>
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                        <p class="para_td">face1</p>
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                        <p class="para_td">object_id2</p>
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                        <p class="para_td">face2</p>
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                        <p class="para_td">value</p>
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                        <p class="para_td">type of identical condition</p>
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                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="top"></td>
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                        <p class="para_td">0</p>
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                        <p class="para_td">Identical faces</p>
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                        <p class="para_td">1</p>
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                        <p class="para_td">Face2 is completely embedded within face1</p>
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                        <p class="para_td">value2</p>
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                        <p class="para_td">maximum deviation distance</p>
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                        <p class="para_td">point</p>
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                        <p class="para_td">face2 point at maximum distance</p>
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                        <p class="para_td">sub_id</p>
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                        <p class="para_td">same as object_id2</p>
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