<!DOCTYPE html
  PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<!--
Copyright (c) 2006 UGS Corp.

All Rights Reserved.

This software and related documentation are proprietary to UGS Corp.
-->
<html>
   <head>
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      <title>WEIGHTCHECK</title>
      <script language="javaScript">
        abridged="false";
        displayConditions=new Array();
      </script>
      <link type="text/css" href="../css/main_styles.css" rel="stylesheet">
   </head>
   <body class="bodydocs" onload="top.pageLoader()" bgcolor="#FFFFFF">
      <hr noshade="true">
      <div class="title_refTopic" id="xps10_pagetitle">WEIGHTCHECK </div>
      <hr noshade="true">
      <h4 class="refClassification">Rigid Body Mass Reduction Check </h4>
      <p class="para_refTopic">At each stage of the mass matrix reduction, compute the rigid body mass and compare with the rigid body mass of the g-set. </p>
      <div class="title_refCategory">Format: </div>
      <div class="refCategoryContent">
         <p align="center"><img align="bottom" src="graphics/casecontrol4a-ufig86.gif"></p>
      </div>
      <div class="title_refCategory">Examples: </div>
      <div class="refCategoryContent"><pre class="indent">WEIGHTCHECK=YES
WEIGHTCHECK(GRID=12,SET=(G,N,A),MASS)=YES</pre></div>
      <div class="title_refCategory">Describers:</div>
      <div class="refCategoryContent">
         <table cellpadding="10" cellspacing="" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="24.42*">
               <col span="1" width="75.58*">
            </colgroup>
            <thead>
               <tr>
                  <th align="left" colspan="1" rowspan="1">
                     <p class="para_th"><b class="uiTerm">Describer </b></p>
                  </th>
                  <th align="left" colspan="1" rowspan="1">
                     <p class="para_th"><b class="uiTerm">Meaning </b></p>
                  </th>
               </tr>
            </thead>
            <tbody>
               <tr>
                  <td align="left" colspan="1" height="32" rowspan="1" valign="top">
                     <p class="para_td">PRINT </p>
                  </td>
                  <td align="left" colspan="1" height="32" rowspan="1" valign="top">
                     <p class="para_td">Writes output to the print file (default).</p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">NOPRINT </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Does not write output to the print file. </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">PUNCH </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Writes output to the punch file. </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">SET </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Selects degree-of-freedom set(s). (Default SET=G) </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">gid </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Reference grid point for the calculation of rigid body motion. The default is the origin of the basic coordinate system. </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">CGI </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">For GCI&ne;YES , GCI=YES requests output of center of gravity and mass moments of inertia. (Default: CGI=NO). </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">WEIGHT/MASS </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Selects output in units of weight or mass. (Default=WEIGHT) </p>
                  </td>
               </tr>
            </tbody>
         </table><br></div>
      <div class="title_refCategory">Remarks: </div>
      <div class="refCategoryContent">
         <ol type="1" start="1">
            <li>
               <p class="para_item">WEIGHTCHECK must be specified above the subcase level. </p>
            </li>
            <li>
               <p class="para_item">For SET=N, N+AUTOSPC, F, or A, the WEIGHTCHECK command also outputs a percentage loss or gain in the reduced rigid body mass matrix (e.g., MAA) as compared to the g-set rigid body mass matrix (e.g., MGG). G must also be requested to obtain this comparison; e.g., WEIGHTCHECK(SET=(G,A))=YES. </p>
            </li>
            <li>
               <p class="para_item">SET=N+AUTOSPC uses the mass matrix for the n-set with the rows corresponding to degrees-of-freedom constrained by the PARAM, AUTOSPC operation zeroed out. If AUTOSPC was not performed then this check is redundant with respect to SET=N. </p>
            </li>
            <li>
               <p class="para_item">WEIGHTCHECK is available in all SOLs. However, in SOLs 101, 105, 114, and 116, because no mass reduction is performed, only WEIGHTCHECK(SET=G) is available. </p>
            </li>
         </ol>
      </div>
   </body>
</html>