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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>SF_IDENT</h1></td></tr><tr><td class = "DocHeader4" colspan = "2"/></tr><tr><td class = "DocHeader3" colspan = "2"><table class = "DocThemeIntro" id = "table12"><tr><td class = "Intro1Only"><p class = "header"><p class = "abstract">
<span class = "shortdesc">Identification and marking of all surface nodes of the active nodes. The nodes can be addressed with the <code class = "ph codeph">SELECT</code> command due to this marking. </span>

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<ul><li><a href = "#tso-r-cmd-sfIdent__tso-r-cmd-sfIdent-rmk" id = "toc_rg" title = "">Remarks
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<p>For example, if shells lie on the surface of solid elements, only the free boundary of the shell
                is identified as being a surface. In this case, the solid elements must be
                selected with the command <code class = "ph codeph">SF_IDENT</code>. The following commands might be
                used to perform the identification of the surface nodes for 3D element types only
                after the finite element model is read via
                <code class = "ph codeph">FEM_INPUT</code>:<pre class = "codeblock">SELECT,ETYPE,S,ETYPE,SOLID_BRICK_8                                                    
SELECT,ETYPE,A,ETYPE,SOLID_TETRA_4                                                   
SELECT,ELEM,S,ETYPE                                                                
SF_IDENT
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<div class = "section" id = "tso-r-cmd-sfIdent__tso-r-cmd-sfIdent-rmk"><h2 class = "title sectiontitle">Remarks
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<li class = "li">In SHAPE optimization, only marked surface nodes can be defined as being 
design nodes. The identification of the surface nodes can be done by 
setting the command <code class = "ph codeph">OPTIONS</code><code class = "ph codeph">, READ_SF_IDENT = ON</code> already during 
loading of the FE model (see <code class = "ph codeph">FEM_INPUT</code>).
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