{"id":381683,"date":"2024-09-05T23:12:10","date_gmt":"2024-09-05T23:12:10","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/381683\/"},"modified":"2024-09-05T23:12:10","modified_gmt":"2024-09-05T23:12:10","slug":"381683","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/381683\/","title":{"rendered":"Reply To: harmonic analysis &#8211; viscoelastic material"},"content":{"rendered":"<p>&lt;p&gt;Hi Henrique,&lt;\/p&gt;&lt;p&gt;In the following section:&lt;\/p&gt;&lt;p&gt;MAPDL Help -&gt; Material Reference -&gt; 4.8.3.1.2 Experimental Data Complex Modulus&lt;\/p&gt;&lt;p&gt;Towards the bottom:&lt;\/p&gt;&lt;p&gt;Two elastic constants are required to define the model. If only one set of experimental data is defined, the poisson&#8217;s ratio is used as the second elastic constant.&lt;\/p&gt;&lt;p&gt;You can add the following to your command snippet.&lt;\/p&gt;&lt;p&gt;&nbsp; &nbsp; MP, PRXY, MATID, 0.3&nbsp; &nbsp;! 0.3 being the possions ratio for your material&lt;\/p&gt;&lt;p&gt;Alternatively you can use the TB command, or add bulk modulus, tensile modulus, or possions ratio as experimental data.&lt;\/p&gt;&lt;p&gt;If this doesn&#8217;t remove the error, can you please add screenshots of your material definition in engineering data and mechanical showing the command snippet implementation.&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-381683","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/381683","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/reply"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/381683\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=381683"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}