


{"id":381242,"date":"2024-08-31T10:45:27","date_gmt":"2024-08-31T10:45:27","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ansys-transient-structual-open-differential-advice-and-contact-problem\/"},"modified":"2024-08-31T10:45:27","modified_gmt":"2024-08-31T10:45:27","slug":"ansys-transient-structual-open-differential-advice-and-contact-problem","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ansys-transient-structual-open-differential-advice-and-contact-problem\/","title":{"rendered":"Ansys transient structual open differential advice and contact problem."},"content":{"rendered":"<p>&lt;p&gt;Hello Im having issues with how to set up contacts and joints and boundary conditions for a differential gearbox design in order to simulate it being driven at a constant rpm from the engine but the wheels are cornering and so power is transfered to the other wheel. currently I am using transient structual solver and have managed to get a small rotation to function but it fails when increasing the rotation amount and im not sure if these boundary conditions meet my criteria for an accurate open differental simulation.&nbsp; additionally im often getting the following errors.&lt;\/p&gt;&lt;p&gt;&nbsp;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/31-08-2024-1725100160-mceclip0.png\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/31-08-2024-1725100188-mceclip1.png\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/31-08-2024-1725100215-mceclip2.png\" \/>&lt;\/p&gt;&lt;p&gt;My contacts are as follows.&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/31-08-2024-1725100298-mceclip3.png\" width=\"745\" height=\"352\" \/>&nbsp;&lt;\/p&gt;&lt;p&gt;Contact between the bracket and the spider gear, this could possibly be surpressed.&nbsp;&lt;br&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/31-08-2024-1725100428-mceclip4.png\" width=\"826\" height=\"387\" \/>&lt;\/p&gt;&lt;p&gt;gear-gear teeth contacts, this is the same for all 4 interfaces.&nbsp;&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/31-08-2024-1725100507-mceclip5.png\" width=\"839\" height=\"394\" \/>&lt;\/p&gt;&lt;p&gt;Revolute joint settings are the same for both bracket-spider gear interfaces&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/31-08-2024-1725100595-mceclip6.png\" width=\"869\" height=\"408\" \/>&lt;\/p&gt;&lt;p&gt;overall geometry settings. material is kept constant.&nbsp;&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/31-08-2024-1725100668-mceclip7.png\" width=\"916\" height=\"427\" \/>&lt;\/p&gt;&lt;p&gt;Overview of the mesh.&nbsp;&lt;br&gt;&lt;br&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/31-08-2024-1725100818-mceclip8.png\" \/>&lt;\/p&gt;&lt;p&gt;analysis settings&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/31-08-2024-1725100852-mceclip9.png\" width=\"1004\" height=\"460\" \/>&lt;\/p&gt;&lt;p&gt;location and size of the driving rotation from the drive shaft, this is a remote displacement on the selected area.&nbsp;&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/31-08-2024-1725100947-mceclip10.png\" width=\"1024\" height=\"468\" \/>&lt;\/p&gt;&lt;p&gt;Left wheel set as a cylindrical support.&nbsp;&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/31-08-2024-1725100998-mceclip11.png\" width=\"902\" height=\"422\" \/>&lt;\/p&gt;&lt;p&gt;Counter rotation meant to simulate friction or resistance caused by this being the inside wheel that is turning. this also a remote displacement.&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-381242","topic","type-topic","status-publish","hentry","topic-tag-modeling-setup-advice-2","topic-tag-transient-structural"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["442838","240"],"_bbp_author_ip":["86.172.168.53"],"_btv_view_count":["266"],"_bbp_topic_status":["unanswered"],"_edit_lock":["1725101211:442838"],"_bbp_topic_id":["381242"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","442838"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["381281"],"_bbp_last_active_id":["381281"],"_bbp_last_active_time":["2024-09-01 19:42:30"]},"test":"seanhanna666gmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/381242","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\/381242\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=381242"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}