{"id":310871,"date":"2023-10-10T15:03:57","date_gmt":"2023-10-10T15:03:57","guid":{"rendered":"\/forum\/forums\/reply\/310871\/"},"modified":"2023-10-10T15:05:01","modified_gmt":"2023-10-10T15:05:01","slug":"310871","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/310871\/","title":{"rendered":"Reply To: How to use MDAMP"},"content":{"rendered":"<p>&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Hi&lt;\/p&gt;&lt;p&gt;First it needs to be used with MSUP (mode super pos.) analysis (say harmonic), so place the command snippet there in the harmonic analysis (not under the modal).&lt;\/p&gt;&lt;p&gt;I would try to look at MDAMP in the help apdl command reference guide.&lt;\/p&gt;&lt;p&gt;Also try MDAMP,1,0.1,0.1,0.1 to see if the first ~ 1-3 peak go down.&lt;\/p&gt;&lt;p&gt;All the best&lt;\/p&gt;&lt;p&gt;Erik&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-310871","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"HiFirst it needs to be used with MSUP (mode super pos.) analysis (say harmonic), so place the command snippet there in the harmonic analysis (not under the modal).I would try to look at MDAMP in the help apdl command reference guide.Also try MDAMP,1,0.1,0.1,0.1 to see if the first ~ 1-3 peak go down.All the bestErik\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/310871\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning 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