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      <title>AXISYMMETRIC</title>
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      <div class="title_refTopic" id="xps10_pagetitle">AXISYMMETRIC </div>
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      <h4 class="refClassification">Conical Shell Boundary Conditions </h4>
      <p class="para_refTopic">Selects boundary conditions for an axisymmetric shell problem or specifies the existence of fluid harmonics for hydroelastic problems. </p>
      <div class="title_refCategory">Format: </div>
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      <div class="title_refCategory">Examples: </div>
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         <p class="para_refCategory">AXISYMMETRIC=COSINE</p>
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      <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">SINE </p>
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                     <p class="para_td">Sine boundary conditions will be used. </p>
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                     <p class="para_td">COSINE </p>
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                     <p class="para_td">Cosine boundary conditions will be used. </p>
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                     <p class="para_td">FLUID </p>
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                     <p class="para_td">Existence of fluid harmonics. </p>
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      <div class="title_refCategory">Remarks: </div>
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            <li>
               <p class="para_item">This command is required for conical shell problems. </p>
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               <p class="para_item">If this command is used for hydroelastic problems, at least one harmonic must be specified on the AXIF command. </p>
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               <p class="para_item">See <a class="links" href="javascript:void(0)" onclick="top.popUpPage('QRG/linkInter_target_not_resolved.html#element:ref32336:-aux,-home','linkInter','menubar=yes,status=yes,resizable=yes,toolbar=yes,scrollbars=yes,location=no,directories=no');return(false);">&ldquo;Conical Shell Element (RINGAX)&rdquo;</a> in the <em>NX Nastran Element Library</em>for a discussion of the conical shell problem. 
               </p>
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            <li>
               <p class="para_item">See <a class="links" href="javascript:void(0)" onclick="top.popUpPage('QRG/linkInter_target_not_resolved.html#adv_dyn:ref11110:-aux,-home','linkInter','menubar=yes,status=yes,resizable=yes,toolbar=yes,scrollbars=yes,location=no,directories=no');return(false);">&ldquo;Axisymmetric Fluids in Tanks&rdquo;</a> in the <em>NX Nastran Advanced Dynamic Analysis User&rsquo;s Guide</em> for a discussion of the hydroelastic formulation. 
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            <li>
               <p class="para_item">The sine boundary condition will constrain components 1, 3, and 5 at every ring for the zero harmonic. </p>
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            <li>
               <p class="para_item">The cosine boundary condition will constrain components 2, 4, and 6 at every ring for the zero harmonic. </p>
            </li>
            <li>
               <p class="para_item">SPC and MPC Case Control commands may also be used to specify additional constraints. </p>
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