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      <title>RBE1</title>
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      <div class="title_refTopic" id="xps10_pagetitle">RBE1 </div>
      <hr noshade="true">
      <h4 class="refClassification">Rigid Body Element, Form 1 </h4>
      <p class="para_refTopic">Defines a rigid body connected to an arbitrary number of grid points.</p>
      <div class="title_refCategory">Format: </div>
      <div class="refCategoryContent">
         <table border="1" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="996*">
               <col span="1" width="996*">
               <col span="1" width="996*">
               <col span="1" width="996*">
               <col span="1" width="996*">
               <col span="1" width="1025*">
               <col span="1" width="998*">
               <col span="1" width="998*">
               <col span="1" width="998*">
               <col span="1" width="998*">
            </colgroup>
            <thead>
               <tr>
                  <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>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">4 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">5 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">6 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">7 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">8 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">9 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">10 </p>
                  </th>
               </tr>
            </thead>
            <tbody>
               <tr>
                  <td align="left" colspan="1" height="21" rowspan="1" valign="top">
                     <p class="para_td">RBE1 </p>
                  </td>
                  <td align="center" colspan="1" height="21" rowspan="1">
                     <p class="para_td">EID </p>
                  </td>
                  <td align="center" colspan="1" height="21" rowspan="1">
                     <p class="para_td">GN1 </p>
                  </td>
                  <td align="center" colspan="1" height="21" rowspan="1">
                     <p class="para_td">CN1 </p>
                  </td>
                  <td align="center" colspan="1" height="21" rowspan="1">
                     <p class="para_td">GN2 </p>
                  </td>
                  <td align="center" colspan="1" height="21" rowspan="1">
                     <p class="para_td">CN2 </p>
                  </td>
                  <td align="center" colspan="1" height="21" rowspan="1">
                     <p class="para_td">GN3 </p>
                  </td>
                  <td align="center" colspan="1" height="21" rowspan="1">
                     <p class="para_td">CN3 </p>
                  </td>
                  <td align="center" bgcolor="gray" colspan="1" height="21" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" height="21" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <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">GN4 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">CN4 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">GN5 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">CN5 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">GN6 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">CN6 </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>
               <tr>
                  <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">&ldquo;UM&rdquo; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">GM1 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">CM1 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">GM2 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">CM2 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">GM3 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">CM3 </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>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <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">GM4 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">CM4 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">-etc.- </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">ALPHA</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>
                  <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">Example: </div>
      <div class="refCategoryContent">
         <table border="1" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
            </colgroup>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">RBE1 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">59 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">59 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">123 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">60 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">456 </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>
                  <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>
               <tr>
                  <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">UM </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">61 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">246 </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>
                  <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>
                  <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">
         <table cellpadding="9" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="12.61*">
               <col span="1" width="87.39*">
            </colgroup>
            <thead>
               <tr>
                  <th align="left" colspan="1" rowspan="1">
                     <p class="para_th"><b class="uiTerm">Field </b></p>
                  </th>
                  <th align="left" colspan="1" rowspan="1">
                     <p class="para_th"><b class="uiTerm">Contents </b></p>
                  </th>
               </tr>
            </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.  (Integer &gt; 0) </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">GNi </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Grid points at which independent degrees-of-freedom for the element are assigned.  (Integer &gt; 0)</p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">CNi </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 rigid element at grid point(s) GNi.  See Remark <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/19topic_21.html#ref72877');return(false);">30-1. </a> (Integers 1 through 6 with no embedded blanks.) 
                     </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&ldquo;UM&rdquo; </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Indicates the start of the degrees-of-freedom belonging to m-set.  (Character) </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">GMj </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Grid points at which dependent degrees-of-freedom are assigned.  (Integer &gt; 0) </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">CMj </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Dependent degrees-of-freedom in the global coordinate system at grid point(s) GMj.  (Integers 1 through 6 with no embedded blanks.) </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="ref72877"></a><p class="para_item">The total number of components in CN1 to CN6 must equal six; for example, CN1=123, CN2=3, CN3=2, CN4=3.  Furthermore, they must jointly be capable of representing any general rigid body motion of the element. </p>
            </li>
            <li>
               <p class="para_item">The first continuation entry is not required if there are fewer than four GN points. </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">A degree-of-freedom cannot be both independent and dependent for the same element.  However, both independent and dependent components can exist at the same grid point. </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 in the <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>
      </div>
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