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<a name = "hj-top"> </a><table class = "table1" id = "table11"><tr><td><table class = "DocHeader"><tr><td class = "DocHeader1" colspan = "2"><h1>DV_BEAD</h1></td></tr><tr><td class = "DocHeader4" colspan = "2"/></tr><tr><td class = "DocHeader3"><table class = "DocHeaderIntro" id = "table12"><tr><td class = "Intro1Only"><p class = "header"><p class = "abstract">
   <span class = "shortdesc">Definition of the design nodes for bead optimization. For more detailed information,
      see <span class = "ph phxref"/> in the <span class = "ph">SIMULIA Tosca Structure</span>
      <span class = "ph">2023</span> user guide. </span>

  </p>
<p>This page discusses: </p><ul><li><a href = "#tso-r-cmd-dvBead__tso-r-cmd-dvBead-rmk" id = "toc_rg" title = "">Remarks</a></li><li><a href = "#tso-r-cmd-dvBead__tso-r-cmd-dvBead-expl" id = "toc_rg" title = "">Examples</a></li></ul>
</p></td></tr></table></td><td class = "DocHeader2"><table class = "DocTopicsSeeAlso" id = "table13"><tr><td class = "TopicsTitle">See Also</td></tr></table><table class = "DocTopicsInOtherGuides" id = "table14"><tr><td height = "8px"/></tr><tr><td class = "TopicsTitleNormal">In Other Guides</td></tr><tr><td><a title = "Design variables that are usable in bead optimization setups are introduced. Valid are all nodes of shell elements." href = "../TsoUserMap/tso-c-usr-bead-designArea-desVar.htm#tso-c-usr-bead-designArea-desVar">Design Variables (DV_BEAD)</a></td></tr></table></td></tr></table>

  

  
  <div class = "body refbody">
   <table class = "table" id = "tso-r-cmd-dvBead__aa1872316"><caption/><colgroup><col/><col/><col/></colgroup><tbody class = "tbody">
       <tr class = "row">
        <td class = "entry">
          <p><span class = "ph uicontrol">ID_NAME</span>
          </p>
        </td>
        <td class = "entry">
          <p>=
           <code class = "ph codeph">&lt;id_name_of_dv_shape&gt;</code>
          </p>
        </td>
        <td class = "entry">
          <p>Name of the
           <code class = "ph codeph">DV_BEAD</code> definition.
          </p>
        </td>
       </tr>
       <tr class = "row">
        <td class = "entry">
          <p><span class = "ph uicontrol">ND_GROUP</span>
          </p>
        </td>
        <td class = "entry">
          <p>=
           <var class = "keyword varname varname">&lt;</var><var class = "keyword varname varname">name_of_node_group</var><var class = "keyword varname varname">&gt;</var>

          </p>
        </td>
        <td class = "entry">
          <p>Name of the node group (design nodes).
          </p>
        </td>
       </tr>
       <tr class = "row">
        <td class = "entry">
          <p><span class = "ph uicontrol">INITIAL_DV_FIELD</span>
          </p>
        </td>
        <td class = "entry">
          <p>=
           <code class = "ph codeph">&lt;name_of_file&gt;</code>
          </p>
        </td>
        <td class = "entry">
          <p>Name of the file with the initial optimization displacements
           field to be used for the optimization.
          </p>
        </td>
       </tr>
      </tbody></table>
   <div class = "section" id = "tso-r-cmd-dvBead__tso-r-cmd-dvBead-rmk"><h2 class = "title sectiontitle">Remarks</h2>
    
    <ol class = "ol">
      <li class = "li">Only surface nodes are regarded as being design nodes at
       <code class = "ph codeph">ND_GROUP</code>.
      </li>
      <li class = "li">Single standing nodes are not regarded as being design nodes at
       <code class = "ph codeph">ND_GROUP</code>.
      </li>
      <li class = "li">Midside nodes are not considered to be design nodes at
       <code class = "ph codeph">ND_GROUP</code>. The midside nodes will be placed between
       the edge nodes at the end of the design cycle.
      </li>
      <li class = "li">Only nodes at shell elements might be defined as design nodes at
       <code class = "ph codeph">ND_GROUP</code>.
      </li>
      <li class = "li">The
       <code class = "ph codeph">INITIAL_DV_FIELD</code> option is only available for
       sensitivity-based optimization.
      </li>
      <li class = "li">The file applied at
       <code class = "ph codeph">INITIAL_DV_FIELD</code> that contains the initial
       optimization displacements field must be located in the start directory of the
       optimization job.
        The format of the
       file must be ONF (Optimization Neutral File). The initial optimization
       displacements field is extracted from the data block 730 with the title
       <span class = "ph">DISP_OPT</span>.
      </li>
      <li class = "li">When using optimization displacements of a previous optimization
       run for the new optimization, it is recommended that you rename the file
       BEAD_XXX.onf (for example, to
       <code class = "ph codeph">INITIAL_OPT_DISPL.onf</code>). Otherwise name conflicts
       with the running optimization (with newly generated optimization displacements
       files BEAD_XXX.onf) might lead to confusion in the post-processing.
      </li>
      <li class = "li"><code class = "ph codeph">INITIAL_DV_FIELD</code> for bead optimization means
       initial optimization displacements.
      </li>
    </ol>
   </div>


   <div class = "section" id = "tso-r-cmd-dvBead__tso-r-cmd-dvBead-expl"><p><map name = "FPMap1"><area href = "#hj-top" title = "Back to Top" shape = "rect" coords = "416, 0, 435, 10"/></map><span class = "itemsprite"/></p><h2 class = "title sectiontitle">Examples</h2>
    
<pre class = "codeblock">
<code class = "ph codeph">DV_BEAD</code>
<code class = "ph codeph">  ID_NAME  = my_dv_bead</code>
<code class = "ph codeph">  ND_GROUP = <var class = "keyword varname varname">design_node_grp</var></code>
<code class = "ph codeph">END_</code>
</pre>
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