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      <title>DLOAD</title>
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      <div class="title_refTopic" id="xps10_pagetitle">DLOAD </div>
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      <h4 class="refClassification">Dynamic Load Set Selection </h4>
      <p class="para_refTopic">Selects a dynamic load or an acoustic source to be applied in a transient or frequency response problem. </p>
      <p class="para_refTopic"><b class="uiTerm">For SOLs 601 and 701 </b>: Selects a time-dependent load for advanced nonlinear analysis. 
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      <div class="title_refCategory">Format: </div>
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         <p class="para_refCategory">DLOAD=n </p>
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      <div class="title_refCategory">Examples: </div>
      <div class="refCategoryContent"><pre class="indent">DLOAD=73</pre></div>
      <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">n </p>
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                     <p class="para_td">Set identification of a DLOAD, RLOAD1, RLOAD2, TLOAD1, TLOAD2, or ACSRCE Bulk Data entry.  (Integer&gt;0) </p>
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                     <p class="para_td">n (SOL 601/701) </p>
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                     <p class="para_td">Set identification of a DLOAD or TLOAD1 Bulk Data entry. (Integer&gt;0) </p>
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      <div class="title_refCategory">Remarks related to transient and frequency response: </div>
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               <p class="para_item">RLOAD1 and RLOAD2 may only be selected in a frequency response problem. </p>
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               <p class="para_item">TLOAD1 and TLOAD2 may be selected in a transient or frequency response problem. </p>
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               <p class="para_item">Either a RLOADi or TLOADi entry (but not both) must be selected in an aeroelastic response problem.  If RLOADi is selected, a frequency response is calculated.  If TLOADi is selected, then transient response is computed by Fourier transform.  When there are only gust loads (GUST entry), the DLOAD selects a TLOADi or RLOADi entry with zero load along with field 3 of the GUST command. </p>
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            <li>
               <p class="para_item">The DLOAD command will be ignored if specified for upstream superelements in dynamic analysis.  To apply loads to upstream superelements, please see the <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/05ref73192_78.html');return(false);">&ldquo;LOADSET&rdquo; </a>. 
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      <div class="title_refCategory">Remarks related to SOLs 601 and 701: </div>
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               <p class="para_item">In SOLs 601 and 701, DLOAD may be used in a static or transient analysis. </p>
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            <li>
               <p class="para_item">Both the DLOAD and LOAD case control commands can be specified in a SOLs 601 and 701 analysis. DLOAD is used to select time-dependent loads and LOAD is used to select constant loads. </p>
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            <li>
               <p class="para_item">See Section 5.1 in the <em>Advanced Nonlinear Theory and Modeling Guide</em> on defining time-dependent loads. 
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