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      <title>SEMREDUCE</title>
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      <div class="title_refTopic" id="xps10_pagetitle">SEMREDUCE </div>
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      <h4 class="refClassification">Superelement Mass and Damping Assembly and Reduction </h4>
      <p class="para_refTopic">Specifies the superelement identification numbers for which the mass and damping matrices will be assembled and reduced.  In buckling analysis, the differential stiffness matrices will be assembled and reduced. </p>
      <div class="title_refCategory">Format: </div>
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      <div class="title_refCategory">Examples: </div>
      <div class="refCategoryContent"><pre class="indent">SEMREDUCE=ALL
SEMREDUCE=9</pre></div>
      <div class="title_refCategory">Describers:</div>
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                     <p class="para_th"><b class="uiTerm">Describer </b></p>
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                     <p class="para_th"><b class="uiTerm">Meaning </b></p>
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                     <p class="para_td">ALL </p>
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                     <p class="para_td">Assembles and reduces matrices for all superelements. </p>
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                     <p class="para_td">n </p>
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                     <p class="para_td">Set identification number of a previously appearing SET command.  Matrices will only be assembled for superelements with identification numbers that appear on this SET command.  (Integer&gt;0) </p>
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                     <p class="para_td">i </p>
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                     <p class="para_td">Identification number of a single superelement for which the load matrices or the mass and damping matrices will be assembled and reduced.  (Integer&gt;0) </p>
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      <div class="title_refCategory">Remarks: </div>
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            <li>
               <p class="para_item">If this command is present, then it must be located before the first SUBCASE command. </p>
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            <li>
               <p class="para_item">Zero (0) is the identification number for the residual structure and can only appear as a member of a set. </p>
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            <li>
               <p class="para_item">This command is used on restart to selectively assemble and reduce mass and damping matrices.  For a further discussion of this command, see the <em>NX Nastran Superelement User&rsquo;s Guide</em>. 
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            </li>
            <li>
               <p class="para_item">If i is used, the superelement identification number must be unique with respect to any SET identification numbers used. </p>
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            <li>
               <p class="para_item">In dynamic analysis, SELASSEMBLE combines the functions of SELREDUCE and SEMREDUCE. </p>
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            <li>
               <p class="para_item">This command has no function in static analysis. </p>
            </li>
            <li>
               <p class="para_item">SEALL=ALL is the default in the Structured SOLs 101 through 200.  This default can be overridden by specifying any of the following Phase 1 commands:  SEALL, SEMG, SELG, SEKR, SELR, or SEMR. </p>
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