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      <title>SOL 601,N or SOL 701</title>
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      <div class="title_refTopic" id="xps10_pagetitle">SOL 601,N or SOL 701 </div>
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      <h4 class="refClassification"></h4>
      <p class="para_refTopic">Executes a NX Nastran Advanced Implicit (SOL 601,N) or Explicit (SOL 701) Nonlinear Solution </p>
      <div class="title_refCategory">Format: </div>
      <div class="refCategoryContent">
         <p class="para_refCategory">SOL 601,N </p>
         <p class="para_refCategory">SOL 701 </p>
      </div>
      <div class="title_refCategory">Examples: </div>
      <div class="refCategoryContent">
         <p class="para_refCategory">SOL 601,106 </p>
         <p class="para_refCategory">SOL 701 </p>
      </div>
      <div class="title_refCategory">Remarks: </div>
      <div class="refCategoryContent">
         <ol type="1" start="1">
            <li>
               <p class="para_item">There must be no space in 601,N. </p>
            </li>
            <li>
               <p class="para_item">You must place the following statement at the beginning of each SOL 601 and 701 Nastran input file:</p>
               <p class="para_item">ASSIGN OUTPUT2=&lsquo;advnlin&rsquo;.op2,UNIT=21</p>
               <p class="para_item">The file name &lsquo;advnlin.op2&rsquo; is reserved. If there is an existing file with this name in the directory that the job is running, it will be overwritten. </p>
            </li>
            <li>
               <p class="para_item">Only one running job is allowed in a directory at any time. </p>
            </li>
            <li>
               <p class="para_item">When an analysis is completed, a restart file dbs.res is created where dbs is set by the &ldquo;dbs&rdquo; keyword (as for dbs.MASTER and dbs.DBALL files). This file should be preserved to run a restart analysis. To run a restart analysis, dbs.res must exist and the parameter MODEX in NXSTRAT bulk data entry must be set to 1. </p>
               <p class="para_item">Note that the default for dbs is the current working directory with the prefix of the current job name. </p>
               <p class="para_item">Note that keyword scratch=no must be used when running a restart analysis.</p>
            </li>
            <li>
               <p class="para_item">In the nastran command, keyword parallel may be used to specify the number of processors to use for the solution. </p>
            </li>
            <li>
               <p class="para_item">In the nastran command, keyword memory (&ge; 128 MB) may be used to specify the maximum memory that can be used for the solution. Note that if memory &lt; 128 MB is specified, it will be ignored. </p>
            </li>
            <li>
               <p class="para_item">N represent s a valid analysis type. The available types are: </p>
               <table border="1" width="100%" align="center">
                  <colgroup span="1">
                     <col span="1" width="32.32*">
                     <col span="1" width="67.68*">
                  </colgroup>
                  <tbody>
                     <tr>
                        <th align="left" colspan="1" rowspan="1">
                           <p class="para_th">N </p>
                        </th>
                        <th align="left" colspan="1" rowspan="1">
                           <p class="para_th">SOL 601 Analysis Types </p>
                        </th>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">106 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Static (Default) </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">129 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">Transient </p>
                        </td>
                     </tr>
                  </tbody>
               </table><br></li>
            <li>
               <p class="para_item">You can use the following Case Control commands with SOL 601 and SOL 701 (except BGSET, BOLTLD and GKRESULTS): </p>
               <table width="100%" align="center">
                  <colgroup span="1">
                     <col span="1" width="32*">
                     <col span="1" width="33*">
                     <col span="1" width="33*">
                  </colgroup>
                  <tbody>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">ACCELERATION </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">MPC </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">STRESS </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">BCRESULTS </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">GKRESULTS </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">SUBCASE </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">BCSET </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">IC </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">TEMPERATURE </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" height="18" rowspan="1" valign="top">
                           <p class="para_td">BGSET </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">LOAD </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">TITLE </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" height="20" rowspan="1" valign="top">
                           <p class="para_td">BOLTLD </p>
                        </td>
                        <td align="left" colspan="1" height="20" rowspan="1" valign="top">
                           <p class="para_td">SET </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">TSTEP </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">DISPLACEMENT </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">SHELLTHK </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">VELOCITY </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">DLOAD </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">SPC </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top"></td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">EBDSET</p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">SPCFORCES </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top"></td>
                     </tr>
                  </tbody>
               </table><br></li>
            <li>
               <p class="para_item">Only one subcase is used. If multiple subcases exist, the first subcase is used. </p>
            </li>
            <li>
               <p class="para_item">Both LOAD and DLOAD can be specified for either static or transient analysis. LOAD selects constant loads while DLOAD selects time-dependent loads. See the <em>Advanced Nonlinear Theory and Modeling Guide</em> on defining time-dependent loads. 
               </p>
            </li>
            <li>
               <p class="para_item">BGSET, BOLTLD and GKRESULTS are used only with SOL 601. </p>
            </li>
            <li>
               <p class="para_item">DISPLACEMENT, VELOCITY, and ACCELERATION should all reference the same set of grid points. If different sets are referenced, the sets are combined and results will be output for the combined set. </p>
            </li>
            <li>
               <p class="para_item">For shell nodes which have 5 degrees of freedom, rotation results are not output for displacements, velocities, and accelerations. </p>
            </li>
            <li>
               <p class="para_item">You can use the following Bulk Data Entries with SOL 601 (all) and SOL 701 (except those marked as &ldquo;not 701&rdquo;): </p>
               <table width="100%" align="center">
                  <colgroup span="1">
                     <col span="1" width="18.98*">
                     <col span="1" width="27.87*">
                     <col span="1" width="24.62*">
                     <col span="1" width="28.52*">
                  </colgroup>
                  <tbody>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">BCPROP </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CORD2S </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">MATHP </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PMASS </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">BCRPARA </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CPENTA </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">MATS1 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PROD </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" height="32" rowspan="1" valign="top">
                           <p class="para_td">BCTPARA </p>
                        </td>
                        <td align="left" colspan="1" height="32" rowspan="1" valign="top">
                           <p class="para_td">CQUAD (not 701) </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">MATT1 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PSHELL </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" height="20" rowspan="1" valign="top">
                           <p class="para_td">BCTADD </p>
                        </td>
                        <td align="left" colspan="1" height="20" rowspan="1" valign="top">
                           <p class="para_td">CQUAD4 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">MATT2 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PSOLID </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">BCTSET </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CQUAD8 (not 701) </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">MATT9 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">RBAR </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" height="17" rowspan="1" valign="top">
                           <p class="para_td">BGSET (not 701) </p>
                        </td>
                        <td align="left" colspan="1" height="17" rowspan="1" valign="top">
                           <p class="para_td">CQUADR (not 701) </p>
                        </td>
                        <td align="left" colspan="1" height="17" rowspan="1" valign="top">
                           <p class="para_td">MOMENT </p>
                        </td>
                        <td align="left" colspan="1" height="17" rowspan="1" valign="top">
                           <p class="para_td">RBE2 </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">BOLT (not 701)  </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CQUADX (not 701) </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">MOMENT1 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">RBE3 </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">BOLTFOR (not 701)  </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CREEP (not 701) </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">MOMENT2 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">RFORCE </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">BSURF </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CROD </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">MPC </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">SPC </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">BSURFS </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CTETRA </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">MPCADD </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">SPC1 </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CBAR </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CTRIA3 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">NXSTRAT </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">SPCADD </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CBEAM </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CTRIA6 (not 701) </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PARAM </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">SPCD </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CBUSH1D </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CTRIAR (not 701) </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PBAR </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">TABLED1 </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CDAMP1 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CTRIAX (not 701) </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PBARL </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">TABLED2 </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CDAMP2 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">DLOAD </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PBCOMP </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">TABLEM1 </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CELAS1 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">EBDSET </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PBEAM </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">TABLES1 </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CELAS2 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">EBDADD </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PBEAML </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">TABLEST </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CGAP </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">FORCE </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PBUSH1D </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">TEMP </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CHEXA </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">FORCE1 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PCOMP (not 701)</p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">TEMPD </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CMASS1 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">FORCE2 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PDAMP </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">TIC </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CMASS2 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">GRAV </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PELAS </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">TLOAD1 </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CONM1 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">GRID </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PGAP </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">TSTEP </p>
                        </td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CONM2 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">LOAD </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PLOAD </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top"></td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CONROD </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">MAT1 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PLOAD1 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top"></td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CORD1C </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">MAT2 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PLOAD2 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top"></td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CORD1R </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">MAT8 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PLOAD4 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top"></td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CORD1S </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">MAT9 </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PLOADX1 (not 701) </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top"></td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CORD2C </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">MATG (not 701) </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PLPLANE (not 701) </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top"></td>
                     </tr>
                     <tr>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">CORD2R </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">MATHE </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top">
                           <p class="para_td">PLSOLID (not 701) </p>
                        </td>
                        <td align="left" colspan="1" rowspan="1" valign="top"></td>
                     </tr>
                  </tbody>
               </table><br></li>
            <li>
               <p class="para_item">BSURF, BSURFS, BCPROP, BCRPARA, BCTSET and BCSET are supported by SOLs 101, 601 and 701. BCTPARA, BCTADD, NXSTRAT, EBDSET and EBDADD are only supported by SOLs 601 and 701. MATG is supported only for SOL 601.</p>
            </li>
            <li>
               <p class="para_item">Not all parameters in each bulk data entry are used. Restrictions are given in the description for the entry. Some restrictions are highlighted in Remark 19. </p>
            </li>
            <li>
               <p class="para_item">For PARAM entry, parameters POST, LGDISP, LGSTRN, ALPHA1, and ALPHA2 are supported. </p>
            </li>
            <li>
               <p class="para_item">PARAM,POST,-2 must be specified to generate both geometry and results data blocks in the op2 file. PARAM,POST,-1 must be specified to generate only results data blocks. Otherwise, no op2 file is generated. </p>
            </li>
            <li>
               <p class="para_item">Some important restrictions in SOL 601 and 701 are highlighted below: </p>
               <ul>
                  <li>
                     <p class="para_item">When there is element birth/death (either through EBDSET or automatic element rupture) or preload bolt, SORT2 output is not supported.</p>
                  </li>
                  <li>
                     <p class="para_item">Structural damping is not supported for individual elements. Hence, GE field in the supported Bulk Data entries is not used. Rayleigh damping is supported and specified with PARAM ALPHA1 and ALPHA2. Only ALPHA1 is supported for SOL 701. </p>
                  </li>
                  <li>
                     <p class="para_item">Nonstructural mass is not supported. </p>
                  </li>
                  <li>
                     <p class="para_item">CROD and CONROD are simulated by rod elements with no torsional stiffness. </p>
                  </li>
                  <li>
                     <p class="para_item">Several restrictions apply to beam elements, e.g. beam offsets, tapered beams, shear center. Please see remarks in the CBAR, CBEAM, PBAR, PBARL, PBEAM, PBEAML, and PBCOMP entries. </p>
                  </li>
                  <li>
                     <p class="para_item">Only relevant fields in the MAT2 and MAT9 entries are used to define orthotropic materials instead of anisotropic materials. </p>
                  </li>
                  <li>
                     <p class="para_item">In the PSHELL entry, only MID1 is used to define material properties of shell elements. </p>
                  </li>
                  <li>
                     <p class="para_item">Restrictions apply to the use of follower force/moment in FORCE1, FORCE2, MOMENT1, and MOMENT2 entries. </p>
                  </li>
                  <li>
                     <p class="para_item">Transverse properties for gap elements (PGAP entry) are not supported. </p>
                  </li>
                  <li>
                     <p class="para_item">Only diagonal terms in the mass matrix defined by CONM1 and CONM2 are used. </p>
                  </li>
                  <li>
                     <p class="para_item">Several restrictions apply to MATHP, CREEP, and PLOAD1 entries. Other restrictions are mentioned in the remarks for the entry. </p>
                  </li>
               </ul>
            </li>
            <li>
               <p class="para_item">For more information on SOL 601 and 701, please refer to the <em>Advanced Nonlinear Theory and Modeling Guide</em>. 
               </p>
            </li>
         </ol><pre class="indent"></pre></div>
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