I am applying a force of 30lbf on the top plate. There is a gravity effect and the lower cylindrical segment of the base plate is fixed. The materials used are ABS+PC plastic. I have not used any contacts. Just the universal joint, and two other fixed joints(Body-Body which connects the spherical joint connectors’ cylindrical part to the top plate) plus the fixed joint (Body to ground) for the lowest module. <\/p>\n
<\/span>After running the simulation, the spherical ends of the connector move out of position almost as if they are sliding in the direction of applied force. They penetrate through the spherical socket\/base\/holder. <\/p>\n
My question is:
1) Why are they not behaving like a universal joint. They should not have any translation. I have only used a universal joint and no contacts. I had used a ‘forced frictional contact in my previous attempt with 1 module (or 2 triangular plates) and I encountered warnings like this in the solution information-<\/p>\n
<\/p>\n
None of the LCP solvers succeeded, Abort computation.<\/em><\/p>\n <\/p>\n No set of active contact stops can satisfy all the constraint equations. Solve cannot proceed<\/em><\/p>\n <\/p>\n Solve failed <\/em><\/p>\n <\/p>\n Error found at time 1.377963e-04<\/em><\/p>\n <\/p>\n <\/p>\n <\/p>\n Solution terminated before normal completion<\/p>\n <\/em>I don’t get this warning when I don’t use any contacts. I am able to solve it just by using joints but the penetration problem exists. Any tips related to modeling such systems in RBD of ANSYS would be highly appreciated.<\/p>\n Thanks in advance.<\/p>\n","protected":false},"template":"","class_list":["post-35374","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["7546"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0","0"],"_btv_view_count":["1932"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["35374"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","164848"],"_bbp_voice_count":["2"],"_bbp_reply_count":["7"],"_bbp_last_reply_id":["85972"],"_bbp_last_active_id":["85972"],"_bbp_last_active_time":["2019-05-23 22:23:31"]},"test":"yanivvk"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/35374","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\/35374\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=35374"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
<\/em>Can someone please tell me what I should do to make the spherical end (modeled as universal joint) realize that it has to stay in its holder position and just rotate instead of sliding and penetrating into other bodies? ![\"\"](\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/8088d05d-6657-4548-9d55-aa3901138fdc\/58d85a0b-b181-4295-ac10-aa4e014eb7a4_model-interference.jpg?width=690&upscale=false\")
<\/p>\n