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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>Overview of Design Responses</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 = "shortdesc">For defining design responses several general settings can be made. These are described in this section.
</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 = "The design response command DRESP defines the system response for the current analysis model." href = "../TsoCmdMap/tso-m-cmd-dresp-sb.htm#tso-m-cmd-dresp-sb">DRESP</a></td></tr></table></td></tr></table>




<div class = "body conbody">
<p>All design responses always consist of one single scalar value.
So although you reference a node or element group in the <code class = "ph codeph">DRESP</code> definition, 
<span class = "ph">Tosca Structure</span> 
will use a group operator (<code class = "ph codeph">GROUP_OPER</code>) to either use the maximal
(<code class = "ph codeph">MAX</code>), minimal (<code class = "ph codeph">MIN</code>) or sum of the values (<code class = "ph codeph">SUM</code>) to combine the responses to a single
value.</p>
<p>Although <span class = "ph">Tosca Structure</span> 
can handle more <span class = "ph">load cases</span> within one
design response, it is best practice to use one design response for
each <span class = "ph">load case</span>. This is done with the item <code class = "ph codeph">LC_SET</code>:</p>
<p>
<pre class = "codeblock">
<code class = "ph codeph">
LC_SET = &lt;analysis_type&gt;,&lt;loadcase_nr&gt;,&lt;substep&gt;
</code>
</pre>
</p>

<pre class = "codeblock">
<code class = "ph codeph">
DRESP
  ID_NAME    = .....
  DEF_TYPE   = .....
  TYPE       = .....
  VAR_OPER   = .....
  UPDATE     = .....
  GROUP_OPER = .....
  EL_GROUP   = .....
  ND_GROUP   = .....
  ELEM       = .....
  NODE       = .....
  LC_SET     = .....
END_
</code>
</pre>
<p>Most entities have default values.</p>
<p><div class = "note"><span class = "run-in.note">Note:
			</span><span class = "notecontent">For design responses that are based on nodal or element values (for example, displacement or
stresses) and use <code class = "ph codeph">GROUP_OPER = MAX | MIN</code>, it is possible to log the node or
element with the maximum or minimum value, respectively. For this, define a copy of the desired
design response with a different ID, but not reference it in the # OPTIMIZE command. Then, the
TOSCA.out file contains the node or element information in addition to the design response
value. Be aware that for large models, this might have an impact on the performance as well as
storage sizes.</span></div>
</p>
</div>


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