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      <title>CAABSF</title>
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      <div class="title_refTopic" id="xps10_pagetitle">CAABSF </div>
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      <h4 class="refClassification">Frequency-Dependent Acoustic Absorber Element </h4>
      <p class="para_refTopic">Defines a frequency-dependent acoustic absorber element in coupled fluid-structural analysis. </p>
      <div class="title_refCategory">Format: </div>
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                     <p class="para_td">1 </p>
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                     <p class="para_td">2 </p>
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                     <p class="para_td">CAABSF </p>
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                     <p class="para_td">EID </p>
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                     <p class="para_td">PID </p>
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                     <p class="para_td">G1 </p>
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                     <p class="para_td">G2 </p>
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                     <p class="para_td">G3 </p>
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                     <p class="para_td">G4 </p>
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                     <p class="para_td">&nbsp; </p>
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                     <p class="para_td">&nbsp; </p>
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                     <p class="para_td">&nbsp; </p>
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      <div class="title_refCategory">Example: </div>
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                     <p class="para_td">CAABSF </p>
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                     <p class="para_td">44 </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">38 </p>
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                     <p class="para_td">1 </p>
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                     <p class="para_td">10 </p>
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                     <p class="para_td">20 </p>
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                     <p class="para_td">&nbsp; </p>
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                     <p class="para_td">&nbsp; </p>
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                     <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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                     <p class="para_th"><b class="uiTerm">Contents </b></p>
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                     <p class="para_td">EID </p>
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                     <p class="para_td">Element identification number.  (Integer &gt; 0) </p>
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                     <p class="para_td">PID </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Property identification number that matches a PAABSF entry.  (Integer &gt; 0; Default = EID) </p>
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                     <p class="para_td">Gi </p>
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                     <p class="para_td">Grid point identification number of fluid connection points.  (Integer &ge; 0 or blank) </p>
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      <div class="title_refCategory">Remarks: </div>
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               <p class="para_item">Element identification numbers should be unique with respect to all other element identification numbers. </p>
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               <p class="para_item">If only G1 is specified then a point impedance is assumed.  If G1 and G2 are specified then a line impedance is assumed.  If G1, G2, and G3 are specified, then an impedance is associated with the area of the triangular face.  If G1 through G4 are specified, then an impedance is associated with the quadrilateral face. See <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/13topic_2.html#ref43162');return(false);">Figure 12-</a>. 
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               <p class="para_item">The CAABSF element must connect entirely to fluid points on the fluid-structure boundary. </p><a name="ref43162"></a><div class="figure">
                  <p align="center"><img align="bottom" src="graphics/bulkc1-fig01.gif"></p>
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               <div class="title_figure">Figure.  Four Types of CAABSF Elements </div>
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