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      <title>Specifying Material Properties</title>
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      <div class="title_topic2" id="xps10_pagetitle">Specifying Material Properties</div>
      <hr noshade="true"><a name="gsprelim_10599"></a><p class="para_topic">The beam&rsquo;s material is steel, with an elastic modulus of </p>
      <p class="para_topic"><img align="bottom" src="graphics/gsprelim28.gif" border="0">.
      </p>
      <p class="para_topic">Poisson&rsquo;s ratio is 0.3.  The format of the MAT1 entry is shown below (we will not use the optional stress limit/margin of safety capability on the MAT1 continuation line).      </p>
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            <col span="1">
            <col span="1">
            <col span="1">
            <col span="1">
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            <col span="1">
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         <thead>
            <tr>
               <td align="center" colspan="1" rowspan="1">
                  <p class="para_td">1</p>
               </td>
               <th colspan="1" rowspan="1">
                  <p class="para_th">2</p>
               </th>
               <th colspan="1" rowspan="1">
                  <p class="para_th">3</p>
               </th>
               <th colspan="1" rowspan="1">
                  <p class="para_th">4</p>
               </th>
               <th colspan="1" rowspan="1">
                  <p class="para_th">5</p>
               </th>
               <th colspan="1" rowspan="1">
                  <p class="para_th">6</p>
               </th>
               <th colspan="1" rowspan="1">
                  <p class="para_th">7</p>
               </th>
               <th colspan="1" rowspan="1">
                  <p class="para_th">8</p>
               </th>
               <th colspan="1" rowspan="1">
                  <p class="para_th">9</p>
               </th>
               <th colspan="1" rowspan="1">
                  <p class="para_th">10</p>
               </th>
            </tr>
         </thead>
         <tbody>
            <tr>
               <td align="center" colspan="1" rowspan="1"><a name="gsprelim_10624"></a><p class="para_td">MAT1</p>
               </td>
               <td align="center" colspan="1" rowspan="1"><a name="gsprelim_10626"></a><p class="para_td">MID</p>
               </td>
               <td align="center" colspan="1" rowspan="1"><a name="gsprelim_10628"></a><p class="para_td">E</p>
               </td>
               <td align="center" colspan="1" rowspan="1"><a name="gsprelim_10630"></a><p class="para_td">G</p>
               </td>
               <td align="center" colspan="1" rowspan="1"><a name="gsprelim_10632"></a><p class="para_td">NU</p>
               </td>
               <td align="center" colspan="1" rowspan="1"><a name="gsprelim_10634"></a><p class="para_td">RHO</p>
               </td>
               <td align="center" colspan="1" rowspan="1"><a name="gsprelim_10636"></a><p class="para_td">A</p>
               </td>
               <td align="center" colspan="1" rowspan="1"><a name="gsprelim_10638"></a><p class="para_td">TREF</p>
               </td>
               <td align="center" colspan="1" rowspan="1"><a name="gsprelim_10640"></a><p class="para_td">GE</p>
               </td>
               <td colspan="1" rowspan="1"></td>
            </tr>
         </tbody>
      </table><br><table cellpadding="8" width="100%" align="center">
         <colgroup span="1">
            <col span="1" width="41*">
            <col span="1" width="158*">
         </colgroup>
         <tr>
            <th align="left" colspan="1" rowspan="1">
               <p class="para_th">Field</p>
            </th>
            <th align="left" colspan="1" rowspan="1">
               <p class="para_th">Contents</p>
            </th>
         </tr>
         <tr valign="top">
            <td colspan="1" rowspan="1"><a name="gsprelim_10649"></a><p class="para_td">MID</p>
            </td>
            <td colspan="1" rowspan="1"><a name="gsprelim_10651"></a><p class="para_td">Material identification number. (Integer &gt; 0)</p>
            </td>
         </tr>
         <tr valign="top">
            <td colspan="1" rowspan="1"><a name="gsprelim_10653"></a><p class="para_td">E</p>
            </td>
            <td colspan="1" rowspan="1"><a name="gsprelim_10658"></a><p class="para_td">Young&rsquo;s modulus. (Real &ge;0.0  or blank)</p>
            </td>
         </tr>
         <tr valign="top">
            <td colspan="1" rowspan="1"><a name="gsprelim_10660"></a><p class="para_td">G</p>
            </td>
            <td colspan="1" rowspan="1"><a name="gsprelim_10665"></a><p class="para_td">Shear modulus. (Real &ge;0.0  or blank)</p>
            </td>
         </tr>
         <tr valign="top">
            <td colspan="1" rowspan="1"><a name="gsprelim_10667"></a><p class="para_td">NU</p>
            </td>
            <td colspan="1" rowspan="1"><a name="gsprelim_10672"></a><p class="para_td">Poisson&rsquo;s ratio. (-1.0 &lt; Real &le; 0.5  or blank)</p>
            </td>
         </tr>
         <tr valign="top">
            <td colspan="1" rowspan="1"><a name="gsprelim_10674"></a><p class="para_td">RHO</p>
            </td>
            <td colspan="1" rowspan="1"><a name="gsprelim_10676"></a><p class="para_td">Mass density. (Real)</p>
            </td>
         </tr>
         <tr valign="top">
            <td colspan="1" rowspan="1"><a name="gsprelim_10678"></a><p class="para_td">A</p>
            </td>
            <td colspan="1" rowspan="1"><a name="gsprelim_10680"></a><p class="para_td">Thermal expansion coefficient. (Real)</p>
            </td>
         </tr>
         <tr valign="top">
            <td colspan="1" rowspan="1"><a name="gsprelim_10682"></a><p class="para_td">TREF</p>
            </td>
            <td colspan="1" rowspan="1"><a name="gsprelim_10684"></a><p class="para_td">Reference temperature for the calculation of thermal loads, or a temperature-dependent thermal expansion coefficient. (Real; Default = 0.0 if A is specified)</p>
            </td>
         </tr>
         <tr valign="top">
            <td colspan="1" rowspan="1"><a name="gsprelim_10686"></a><p class="para_td">GE</p>
            </td>
            <td colspan="1" rowspan="1"><a name="gsprelim_10688"></a><p class="para_td">Structural element damping coefficient. (Real)</p>
            </td>
         </tr>
      </table><br><a name="gsprelim_10689"></a><p class="para_topic">The material identification number called out on the PBAR entry is 201; this goes in field 2 of the MAT1 entry.  Values for RHO, A, TREF, and GE are irrelevant to this problem and are therefore left blank.  Thus, the MAT1 entry is written as follows:      </p>
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            <col align="center" span="1">
            <col align="center" span="1">
            <col align="center" span="1">
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            <col span="1">
            <col span="1">
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            <col span="1">
            <col span="1">
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         <tr>
            <td colspan="1" rowspan="1"><a name="gsprelim_10692"></a><p class="para_td">MAT1</p>
            </td>
            <td colspan="1" rowspan="1"><a name="gsprelim_10694"></a><p class="para_td">201</p>
            </td>
            <td colspan="1" rowspan="1"><a name="gsprelim_10696"></a><p class="para_td">30.E6</p>
            </td>
            <td colspan="1" rowspan="1"></td>
            <td colspan="1" rowspan="1"><a name="gsprelim_10700"></a><p class="para_td">.3</p>
            </td>
            <td colspan="1" rowspan="1"></td>
            <td colspan="1" rowspan="1"></td>
            <td colspan="1" rowspan="1"></td>
            <td colspan="1" rowspan="1"></td>
            <td colspan="1" rowspan="1"></td>
         </tr>
      </table><br><a name="gsprelim_10711"></a><p class="para_topic">In free field format,</p><a name="gsprelim_10712"></a><pre class="indent">
    MAT1,201,30.E6,,.3
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