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      <title>DSCONS</title>
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      <div class="title_refTopic" id="xps10_pagetitle">DSCONS </div>
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      <h4 class="refClassification">Design Constraint </h4>
      <p class="para_refTopic">Defines a design constraint in design sensitivity analysis (original DSA).  See the <em><a class="links" href="javascript:void(0)" onclick="top.popUpPage('QRG/linkInter_target_not_resolved.html#User:ref86112:-aux,-home','linkInter','menubar=yes,status=yes,resizable=yes,toolbar=yes,scrollbars=yes,location=no,directories=no');return(false);">NX Nastran User&rsquo;s Guide</a></em>.
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      <div class="title_refCategory">Format: </div>
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                     <p class="para_th">1 </p>
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                     <p class="para_th">2 </p>
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                     <p class="para_th">3 </p>
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                     <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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                     <p class="para_th">10 </p>
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                     <p class="para_td">DSCONS </p>
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                     <p class="para_td">DSCID </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">LABEL </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">TYPE </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">ID </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">COMP </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">LIMIT </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">OPT </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">LAMNO </p>
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                  <td align="center" bgcolor="gray" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
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      <div class="title_refCategory">Example: </div>
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                     <p class="para_td">DSCONS </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">21 </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">G101DX </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">DISP </p>
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                     <p class="para_td">4 </p>
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                     <p class="para_td">1 </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">.06 </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">MAX </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">6 </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
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      <div class="title_refCategory">Fields:</div>
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                     <p class="para_th"><b class="uiTerm">Field </b></p>
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                     <p class="para_th"><b class="uiTerm">Contents </b></p>
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                     <p class="para_td">DSCID </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Design constraint identification number.  Must be unique for aIl DSCONS entries.  (Integer&gt;0) </p>
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                     <p class="para_td">LABEL </p>
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                     <p class="para_td">Label assigned to the constraint in the output.  (Character) </p>
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                     <p class="para_td">TYPE </p>
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                     <p class="para_td">Type of constraint.  (Character): </p>
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                     <p class="para_td">&nbsp; </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">DISP = Displacement </p>
                     <p class="para_td">STRESS = Element stress </p>
                     <p class="para_td">FORCE = Element force </p>
                     <p class="para_td">CSTR = Lamina stress in elements for composites </p>
                     <p class="para_td">CFOR = Failure index for a lamina in element for composites </p>
                     <p class="para_td">LAMA = Eigenvalue or buckling load factor </p>
                     <p class="para_td">FREQ = Frequency </p>
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                     <p class="para_td">ID </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Identification number of constraint; i.e., grid ID, element ID, or mode number.  (Integer&gt;0) </p>
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                     <p class="para_td">COMP </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Component/item to be constrained.  COMP is not used for buckling and normal modes.  (Integer &ge; 0) </p>
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                     <p class="para_td">&nbsp; </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">For grid points, use 1, 2, 3, 4, 5, and 6, which correspond to T1, T2, T3, R1, R2, and R3, respectively. </p>
                     <p class="para_td">For scalar points, a value of 0, 1, or blank may be used. </p>
                     <p class="para_td">For elements, refer to <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/09ref75809_1.html');return(false);">&ldquo;Item Codes&rdquo; </a> for tables of element stress and force item codes. 
                     </p>
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                     <p class="para_td">LIMIT </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Value of limit.  (Real; Default = 0.0) </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">OPT </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Constraint (&psi;) equation option.  (Character:  &ldquo;MAX&rdquo; or &ldquo;MIN&rdquo;; Default is &ldquo;MAX&rdquo;). </p>
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                     <p class="para_td">&nbsp; </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">If OPT is MAX, then: </p>
                     <p class="para_td"><img align="bottom" src="graphics/bulkde-equ22.gif" border="0"></p>
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                     <p class="para_td">&nbsp; </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">If OPT is MIN, then: </p>
                     <p class="para_td"><img align="bottom" src="graphics/bulkde-equ23.gif" border="0"></p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">LAMNO </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Layer number in the laminate for which the constraint is applicable.  (Integer, Default = 1) </p>
                  </td>
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            </tbody>
         </table><br></div>
      <div class="title_refCategory">Remarks: </div>
      <div class="refCategoryContent">
         <ol type="1" start="1">
            <li>
               <p class="para_item">DSCONS entries must be selected with the SET2 Case Control command. </p>
            </li>
            <li>
               <p class="para_item">DSCONS is used only for design sensitivity and not for optimization. </p>
            </li>
            <li>
               <p class="para_item">DSCONS is used only in design sensitivity analysis (original DSA), described in the <em><a class="links" href="javascript:void(0)" onclick="top.popUpPage('QRG/linkInter_target_not_resolved.html#User:ref86112:-aux,-home','linkInter','menubar=yes,status=yes,resizable=yes,toolbar=yes,scrollbars=yes,location=no,directories=no');return(false);">NX Nastran User&rsquo;s Guide</a></em>. 
               </p>
            </li>
         </ol>
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