{"id":391526,"date":"2024-10-27T21:19:33","date_gmt":"2024-10-27T21:19:33","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/calculating-only-modal-coordinates-from-an-msup-transient-analysis-in-mechanical\/"},"modified":"2024-10-27T21:19:33","modified_gmt":"2024-10-27T21:19:33","slug":"calculating-only-modal-coordinates-from-an-msup-transient-analysis-in-mechanical","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/calculating-only-modal-coordinates-from-an-msup-transient-analysis-in-mechanical\/","title":{"rendered":"Calculating only Modal Coordinates from an MSUP Transient Analysis in Mechanical"},"content":{"rendered":"<p>&lt;p&gt;Hi everyone,&lt;\/p&gt;&lt;p&gt;As the title of the topic suggests, I am looking for a way of calculating \/ writing only a modal coordinate file (.MCF) from a mode-superposition based trasient analysis in Mechanical.&lt;\/p&gt;&lt;p&gt;I have tried OUTRES,ALL,NONE command snippet in transient analysis and also tried turning on the &#8220;On-Demand Expansion&#8221; in both modal in steps in my transient analyses to be able to write only the MCF file as an output, yet it seems that APDL solver still does some expansion-like thing behind the scenes (it says that it still calculates reduced displacements etc, even though I don&#8217;t write them due to my OUTRES,ALL,NONE command in all steps.&lt;\/p&gt;&lt;p&gt;The reason I want to be able to just calculate and skip everything is that I have a fairly large 3D model (about 2 million elements, 4 million nodes) with some forces and moments applied with remote points( so there are nodal forces applied on the model), so with expansion step, even just writing the MCF file takes more than a few hours for a for a few thousand timestep-long data.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Any help is much appreciated.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Thanks in advance.&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-391526","topic","type-topic","status-publish","hentry","topic-tag-Modal_Analysis-1","topic-tag-mode-superposition"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi everyone,As the title of the topic suggests, I am looking for a way of calculating \/ writing only a modal coordinate file (.MCF) from a mode-superposition based trasient analysis in Mechanical.I have tried OUTRES,ALL,NONE command snippet in transient analysis and also tried turning on the &quot;On-Demand Expansion&quot; in both modal in steps in my\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/calculating-only-modal-coordinates-from-an-msup-transient-analysis-in-mechanical\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" 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