{"id":355203,"date":"2024-03-04T15:48:01","date_gmt":"2024-03-04T15:48:01","guid":{"rendered":"\/forum\/forums\/reply\/355203\/"},"modified":"2024-03-04T15:48:01","modified_gmt":"2024-03-04T15:48:01","slug":"355203","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/355203\/","title":{"rendered":"Reply To: Mass Normalized Mode Shape Vector extraction from Ansys Workbench"},"content":{"rendered":"<p>&lt;p&gt;Modes must be mass normalized {phi&#8217;}[M]{phi} = 1.0 to be used in a mode-superposition analysis and that is default.&nbsp; Sometimes customers aren&#8217;t going to be doing a mode-superposition and there&#8217;s an option to scale the mode so that the maximum dof value is 1.0.&nbsp; Mass scaled modal displacements can be greater than 1.0&nbsp; If [M] is very small, {phi} must be large to make {phi&#8217;}[M]{phi} = 1.0.&nbsp; Note also that even with unit scaling, total deformation can be greater than 1.0 because it is the SRSS of three dof, all of which could be 1.0 (probably not though.)&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-355203","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=\"Modes must be mass normalized {phi&#039;}[M]{phi} = 1.0 to be used in a mode-superposition analysis and that is default. Sometimes customers aren&#039;t going to be doing a mode-superposition and there&#039;s an option to scale the mode so that the maximum dof value is 1.0. Mass scaled modal displacements can be greater than 1.0 If [M]\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/355203\/\" \/>\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 Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Reply To: Mass Normalized Mode Shape Vector extraction from Ansys Workbench | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Modes must be mass normalized {phi&#039;}[M]{phi} = 1.0 to be used in a mode-superposition analysis and that is default. 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