{"id":170629,"date":"2023-06-05T07:04:53","date_gmt":"2023-06-05T07:04:53","guid":{"rendered":"\/knowledge\/forums\/topic\/how-can-i-get-the-center-of-gravity-of-an-assembly-including-point-masses\/"},"modified":"2023-07-31T12:33:28","modified_gmt":"2023-07-31T12:33:28","slug":"how-can-i-get-the-center-of-gravity-of-an-assembly-including-point-masses","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-can-i-get-the-center-of-gravity-of-an-assembly-including-point-masses\/","title":{"rendered":"How can I get the center of gravity of an assembly including Point Masses?"},"content":{"rendered":"<p>Question: For large assembly models that contain multiple bodies, as well as point masses, I am not aware of a way to obtain the Center of Gravity (CG) in Workbench Mechanical other than calculating it myself. The other way is to make the assembly a multi-body part in DesignModeler and bring it back into mechanical to get the CG, but that will not include the point masses. Is there an easier feature that I am missing to quickly obtain the CG of my model?  Answer: If you would like to determine the CG of a group of parts, including Point Mass(es), suppress all other parts that are not of interest.  Insert a blank &#8220;Commands (APDL)&#8221; object and solve the model.  Review the Solver Output under the &#8220;Solution Information&#8221; branch and use Ctrl+F to search for the term &#8220;CENTER OF MASS&#8221;.  You will find output similar to the one below, which provides the mass property information of the unsuppressed parts, including Point Masses: &#8212;&#8211; Begin sample output     CENTER OF MASS (X,Y,Z)=  -0.25591       0.29587      -0.98425E-01     TOTAL INERTIA ABOUT CENTER OF MASS         0.32906E-04   0.44046E-19  -0.18635E-19         0.44046E-19   0.57729E-04   0.35575E-19        -0.18635E-19   0.35575E-19   0.47116E-04      The inertia principal axes coincide with the global Cartesian axes  &#8212;&#8211; End sample output (If your solution fails to solve completely, don&#8217;t worry, as the above output is all that is desired.  Please remember to unsuppress all required parts for your actual solution.)<\/p>\n","protected":false},"template":"","class_list":["post-170629","topic","type-topic","status-publish","hentry","topic-tag-17-2","topic-tag-general","topic-tag-mechanical","topic-tag-structural-mechanics-general","topic-tag-structural-mechanics"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_last_active_time":["2\/6\/2023 20:20"],"_bbp_forum_id":["27789"],"_bbp_author_ip":["209.182.204.162"],"_btv_view_count":["6014"],"siebel_km_number":["2043481"],"product_version":["17.2"],"km_published_date":["2016-09-30T00:00:00.000Z"],"family":["Structural Mechanics"],"application_name":["Mechanical"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/170629","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/170629\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=170629"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}