{"id":244449,"date":"2022-12-20T04:03:01","date_gmt":"2022-12-20T04:03:01","guid":{"rendered":"\/forum\/forums\/topic\/grounded-joints-as-boundary-condition-for-random-vibe-analysis\/"},"modified":"2022-12-20T04:03:01","modified_gmt":"2022-12-20T04:03:01","slug":"grounded-joints-as-boundary-condition-for-random-vibe-analysis","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/grounded-joints-as-boundary-condition-for-random-vibe-analysis\/","title":{"rendered":"Grounded joints as boundary condition for Random Vibe analysis"},"content":{"rendered":"<p>Hello all,&nbsp;<\/p>\n<p>I&#8217;m trying to run a random vibration analysis in Ansys Mechanical 2022 R1 of a part that is constrained to ground through Bushing Joints which are used to capture bolt stiffness. The Random Vibration boundary condition requires a single constraint input and a grounded joint is not a constraint. Is there a way to get around this problem?&nbsp;<\/p>\n<p>In Nastran I would create my Bushing element between my part and a node with a fixed constraint, but Ansys doesn&#8217;t seem to allow me to create a Bushing Joint between my part and something that I can apply a fixed boundary condition on. My workaround has been to bring in geometry that I can set as Rigid and then apply a fixed constraint to that and create Bushing body-to-body joints between the part I want to analyze and this rigid foundation part.&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Thanks!<\/p>\n","protected":false},"template":"","class_list":["post-244449","topic","type-topic","status-closed","hentry","topic-tag-ansys-mechanical","topic-tag-mechanical","topic-tag-random-vibration"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["270955","240"],"_bbp_author_ip":["23.77.218.237"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1112"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["244449"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","270955"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["244510"],"_bbp_last_active_id":["244510"],"_bbp_last_active_time":["2022-12-20 13:19:07"]},"test":"derganceamazon-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/244449","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/244449\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=244449"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}