{"id":167194,"date":"2022-03-10T16:36:02","date_gmt":"2022-03-10T16:36:02","guid":{"rendered":"\/forum\/forums\/topic\/static-equilibrium-of-rigid-body-system\/"},"modified":"2022-04-05T10:52:19","modified_gmt":"2022-04-05T10:52:19","slug":"static-equilibrium-of-rigid-body-system","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/static-equilibrium-of-rigid-body-system\/","title":{"rendered":"Static equilibrium of rigid body system."},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hello!<\/p>\n<p>I have a question about Rigid Dynamics and Static Structural. Is it possible to find static equlibrium of system of rigid bodies using these types of analysis? In more detail, I want to model a system of rigid rods connected by springs. There is also a load applied to the end of one of the rods. The load is constant and shouldn&#039;t change direction. The problem is to find a static equilibrium of this system under the load. Masses , materials and radii of rods don&#039;t matter because the problem is static.<\/p>\n<p>I tried to do that with 1 horizontal rod (modeled just by solid cylinder) connected to the ground in one of its lateral faces by revolute joint with non-zero rotational stiffness. I tried to apply load to the other lateral face of the cylinder. <\/p>\n<p>First I&#039;ve tried Rigid Dynamics analysis but I faced the problem that only Remote Force can be applied to the rod. But I don&#039;t know is it ok to define the origin of remote force to be not on the face I want to apply this force to. I tried several times to apply the force from different locations. The solution always failed. Anyway, I don&#039;t really know if it is possible to solve static problem in Rigid Dynamics where it&#039;s not possible to make a constraint of zero acceleration for example.<\/p>\n<p>In Static Structural I&#039;ve also defined Remote Force because the solver said that usual Force can&#039;t be applied to rigid body. Solution didn&#039;t converge, it has many errors, including &quot;Not enough constraints appear to be applied to prevent rigid body motion.&quot; That&#039;s why I don&#039;t know is it possible to to solve static equilibrium problem of rigid body in Structural as it&#039;s always trying to prevent rigid body motion.<\/p>\n<p>It would be very nice to get an answer for my question. Thank you very much!!!<\/p>\n","protected":false},"template":"","class_list":["post-167194","topic","type-topic","status-closed","hentry","topic-tag-ansys-mechanical","topic-tag-ansys-student","topic-tag-convergence","topic-tag-static-structural","topic-tag-structural-mechanics"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_btv_view_count":["2262"],"_bbp_likes_count":["0"],"_bbp_subscription":["250993"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["167194"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","250993"],"_bbp_voice_count":["2"],"_bbp_reply_count":["15"],"_bbp_last_reply_id":["207991"],"_bbp_last_active_id":["207991"],"_bbp_last_active_time":["2022-04-05 10:52:19"]},"test":"alpatovivanviktorovichgmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/167194","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\/167194\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=167194"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}