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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_SHAPE</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 shape optimization.
   </span>

  </p>
<p>This page discusses: </p><ul><li><a href = "#tso-r-cmd-dvShape__tso-r-cmd-dvShape-rmk" id = "toc_rg" title = "">Remarks</a></li><li><a href = "#tso-r-cmd-dvShape__tso-r-cmd-dvShape-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 for shape optimization are defined when assigning a node group to the design area." href = "../TsoUserMap/tso-c-usr-shape-desArea-desVar.htm#tso-c-usr-shape-desArea-desVar">About Design Variables (DV_SHAPE)</a></td></tr></table></td></tr></table>

  

  
  <div class = "body refbody">
   <table class = "table" id = "tso-r-cmd-dvShape__aa1395525"><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_SHAPE</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>= <code class = "ph codeph">&lt;name_of_node_group&gt;</code></p>
        </td>
        <td class = "entry">
          <p>Name of the node group.</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 displacement field to be used for the optimization.</p>
        </td>
       </tr>
      </tbody></table>
   <div class = "section" id = "tso-r-cmd-dvShape__tso-r-cmd-dvShape-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">The <code class = "ph codeph">INITIAL_DV_FIELD</code> option is available only 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 to rename the file SHAPE_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 SHAPE_XXX.onf) might lead to confusion in the post-processing.
      </li>
      <li class = "li"><code class = "ph codeph">INITIAL_DV_FIELD</code> for shape optimization means
       initial optimization displacements.
      </li>
    </ol>
   </div>


   <div class = "section" id = "tso-r-cmd-dvShape__tso-r-cmd-dvShape-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_SHAPE
  ID_NAME  = my_dv_shape
  ND_GROUP = design_node_grp
END_
</code></pre>
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