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      <title>MOMENT1</title>
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      <div class="title_refTopic" id="xps10_pagetitle">MOMENT1 </div>
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      <h4 class="refClassification">Static Moment, Alternate Form 1 </h4>
      <p class="para_refTopic">Defines a static concentrated moment at a grid point by specifying a magnitude and two grid points that determine the direction. </p>
      <div class="title_refCategory">Format: </div>
      <div class="refCategoryContent">
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                     <p class="para_th">1 </p>
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                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">2 </p>
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                  <th align="center" colspan="1" rowspan="1">
                     <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">MOMENT1 </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">SID </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">G </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">M </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">G1 </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">G2 </p>
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                  <td align="center" bgcolor="gray" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
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                  <td align="center" bgcolor="gray" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
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                  <td align="center" bgcolor="gray" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </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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         <table border="1" width="100%" align="center">
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               <col span="1" width="1311*">
               <col span="1" width="983*">
               <col span="1" width="995*">
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               <col span="1" width="983*">
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               <col span="1" width="896*">
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                     <p class="para_td">MOMENT1 </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">6 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">13 </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">-2.93 </p>
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                     <p class="para_td">16 </p>
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                     <p class="para_td">13 </p>
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                     <p class="para_td">&nbsp; </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
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                     <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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                  <th align="left" colspan="1" rowspan="1">
                     <p class="para_th"><b class="uiTerm">Contents </b></p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">SID </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Load set identification number.  (Integer &gt; 0) </p>
                  </td>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">G </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Grid point identification number at which the moment is applied.  (Integer &gt; 0) </p>
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                     <p class="para_td">M </p>
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                     <p class="para_td">Magnitude of moment.  (Real) </p>
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                     <p class="para_td">G1, G2 </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Grid point identification numbers used to define the unit vector <img align="bottom" src="graphics/bulkmno-ufig08.gif" border="0">.  (Integer &gt; 0; G1 and G2 cannot be coincident.) 
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      <div class="title_refCategory">Remarks: </div>
      <div class="refCategoryContent">
         <ol type="1" start="1">
            <li>
               <p class="para_item">The static concentrated moment applied to grid point G is given by </p>
               <p align="left"><img align="bottom" src="graphics/bulkmno-equ30.gif"></p>
               <p class="para_item">where </p>
               <p class="para_item"><img align="bottom" src="graphics/bulkmno-ufig08.gif" border="0"> is a unit vector parallel to a vector from G1 to G2. 
               </p>
            </li>
            <li>
               <p class="para_item">In the static solution sequences, the load set ID (SID) is selected by the Case Control command LOAD.  In the dynamic solution sequences, SID must be referenced in the LID field of an LSEQ entry, which in turn must be selected by the Case Control command LOADSET. </p>
            </li>
            <li>
               <p class="para_item">The follower force effects due to loads from this entry are included in the stiffness in all linear solution sequences that calculate a differential stiffness. The solution sequences are SOLs 103, 105, 107 to 112, 115 and 116 (see also the parameter <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/08ref24356_2.html#ref32029');return(false);">&ldquo;FOLLOWK&rdquo; </a>). In addition, follower force effects are included in the force balance in the nonlinear static and nonlinear transient dynamic solution sequences, SOLs 106, 129, 153, and 159, if geometric nonlinear effects are turned on with PARAM,LGDISP,1. The follower force stiffness is included in the nonlinear static solution sequences (SOLs 106 and 153) but not in the nonlinear transient dynamic solution sequences (SOLs 129 and 159). 
               </p>
            </li>
         </ol>
      </div>
      <div class="title_refCategory">Remarks related to SOLs 601 and 701: </div>
      <div class="refCategoryContent">
         <ol type="1" start="1">
            <li>
               <p class="para_item">If G1=G or G2=G, the moment is a follower moment in large displacement analysis (i.e., PARAM,LGDISP,1). Otherwise, the direction of the moment is defined by the original positions of G1 and G2 and does not change even for large displacement analysis. </p>
            </li>
            <li>
               <p class="para_item">To apply a moment with constant magnitude, SID is selected by Case Control command LOAD = SID for both static and transient analysis. </p>
            </li>
            <li>
               <p class="para_item">To apply a time-dependent moment, SID is referenced by the field EXCITEID = SID in the TLOAD1 entry. Time-dependent loads are selected by Case Control command DLOAD. </p>
            </li>
         </ol>
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