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      <title>RTRPLT</title>
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      <div class="title_refTopic" id="xps10_pagetitle">RTRPLT </div>
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      <h4 class="refClassification">Rigid Triangular Plate </h4>
      <p class="para_refTopic">Defines a rigid triangular plate. </p>
      <div class="title_refCategory">Format: </div>
      <div class="refCategoryContent">
         <table border="1" width="100%" align="center">
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                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">1 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">2 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">3 </p>
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                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">4 </p>
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                     <p class="para_th">5 </p>
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                     <p class="para_th">6 </p>
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                     <p class="para_th">7 </p>
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                     <p class="para_th">8 </p>
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                     <p class="para_th">9 </p>
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                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">10 </p>
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            </thead>
            <tbody>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">RTRPLT </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">EID </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">GA </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">GB </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">GC </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">CNA </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">CNB </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">CNC </p>
                  </td>
                  <td align="center" bgcolor="gray" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">CMA </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">CMB </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">CMC </p>
                  </td>
                  <td align="center" bgcolor="" colspan="1" rowspan="1">
                     <p class="para_td">ALPHA</p>
                  </td>
                  <td align="center" bgcolor="gray" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" bgcolor="gray" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" bgcolor="gray" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" bgcolor="gray" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
            </tbody>
         </table><br></div>
      <div class="title_refCategory">Example: </div>
      <div class="refCategoryContent">
         <table border="1" width="100%" align="center">
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            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">RTRPLT </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">7 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">1 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">2 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">3 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">1236 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">3 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">3 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
            </tbody>
         </table><br></div>
      <div class="title_refCategory">Fields:</div>
      <div class="refCategoryContent">
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                     <p class="para_th"><b class="uiTerm">Field </b></p>
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                  <th align="left" colspan="1" rowspan="1">
                     <p class="para_th"><b class="uiTerm">Contents </b></p>
                  </th>
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            </thead>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">EID </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Element identification number. </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">GA, GB, GC </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Grid point identification number of connection points. </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">CNA, CNB, CNC </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Independent degrees-of-freedom in the global coordinate system for the element at grid points GA, GB, and GC, indicated by any of the Integers 1 through 6 with no embedded blanks.  See Remark <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/19topic_36.html#ref20460');return(false);">55-1. </a> (Integer &ge; 0 or blank) 
                     </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">CMA, CMB, CMC </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Component numbers of dependent degrees-of-freedom in the global coordinate system.  (Any of the Integers 1 through 6 with no embedded blanks, or 0 or blank.) </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">ALPHA</p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Thermal expansion coefficient. (Real &gt; 0.0)</p>
                  </td>
               </tr>
            </tbody>
         </table><br></div>
      <div class="title_refCategory">Remarks: </div>
      <div class="refCategoryContent">
         <ol type="1" start="1">
            <li><a name="ref20460"></a><p class="para_item">The total number of components in CNA, CNB, and CNC must equal six; for example, CNA=1236, CNB=3, CNC=3.  Furthermore, they must jointly be capable of representing any general rigid body motion of the element. </p>
            </li>
            <li>
               <p class="para_item">If CMA, CMB, and CMC are all zero or blank or if the continuation entry is omitted, all of the degrees-of-freedom not in CNA, CNB, and CNC will be made dependent (i.e., they will be made members of the m-set). </p>
            </li>
            <li>
               <p class="para_item">Dependent degrees-of-freedom assigned by one rigid element may not also be assigned dependent by another rigid element or by a multipoint constraint. </p>
            </li>
            <li>
               <p class="para_item">Element identification numbers should be unique with respect to all other element identification numbers. </p>
            </li>
            <li>
               <p class="para_item">Rigid elements, unlike MPCs, are not selected through the Case Control Section. </p>
            </li>
            <li>
               <p class="para_item">Forces of multipoint constraint may be recovered in all solution sequences, except SOL 129, with the MPCFORCE Case Control command. </p>
            </li>
            <li>
               <p class="para_item">Rigid elements are ignored in heat transfer problems. </p>
            </li>
            <li>
               <p class="para_item">See R-Type Elements inthe<em>NX Nastran Element Library</em> for a discussion of rigid elements. 
               </p>
            </li>
            <li>
               <p class="para_item">The m-set coordinates specified on this entry may not be specified on other entries that define mutually exclusive sets.  See <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/10ref73695_1.html');return(false);">&ldquo;Degree-of-Freedom Sets&rdquo; </a> for a list of these entries. 
               </p>
            </li>
         </ol>
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