{"id":167152,"date":"2023-04-05T14:33:00","date_gmt":"2023-04-05T14:33:00","guid":{"rendered":"\/knowledge\/forums\/topic\/from-the-command-help-about-d-the-enforced-motion-and-residual-vector-cannot-be-used-together-in-a-modal-analysis-is-this-true\/"},"modified":"2023-07-31T12:32:26","modified_gmt":"2023-07-31T12:32:26","slug":"from-the-command-help-about-d-the-enforced-motion-and-residual-vector-cannot-be-used-together-in-a-modal-analysis-is-this-true","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/from-the-command-help-about-d-the-enforced-motion-and-residual-vector-cannot-be-used-together-in-a-modal-analysis-is-this-true\/","title":{"rendered":"From the command help about D, the enforced motion and residual vector cannot be used together in a modal analysis. Is this true?"},"content":{"rendered":"<p>From the help, \u201cD,,,SUPPORT\u201d is needed only when rigid body modes are present because we need to apply pseudo-constraint to compute residual vector. The model is constrained when the enforced base identifier is applied otherwise. Enforced motion and residual vector are supported in a modal analysis.<\/p>\n","protected":false},"template":"","class_list":["post-167152","topic","type-topic","status-publish","hentry","topic-tag-19-2","topic-tag-general","topic-tag-mechanical-apdl","topic-tag-structural-dynamics","topic-tag-structural-mechanics"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_last_active_time":["5\/4\/2023 20:20"],"_bbp_forum_id":["27789"],"_bbp_author_ip":["209.182.204.162"],"_btv_view_count":["459"],"siebel_km_number":["2057398"],"product_version":["19.2"],"km_published_date":["2018-12-01T00:00:00.000Z"],"family":["Structural Mechanics"],"application_name":["Mechanical APDL"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/167152","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\/167152\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=167152"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}