{"id":39491,"date":"2019-12-09T13:58:31","date_gmt":"2019-12-09T13:58:31","guid":{"rendered":"\/forum\/forums\/topic\/simulating-a-compliant-mechanism\/"},"modified":"2019-12-09T13:58:31","modified_gmt":"2019-12-09T13:58:31","slug":"simulating-a-compliant-mechanism","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/simulating-a-compliant-mechanism\/","title":{"rendered":"Simulating a compliant mechanism"},"content":{"rendered":"<p>Hello everyone,<\/p>\n<p><\/p>\n<p>My latest assignment consists in simulating the loading condition for a flexible pivot:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/55a6e19b-e84d-4051-b632-aa9a01208530\/8a62f906-6fab-4348-a3a4-ab1e00e2aa07_1.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>while I successfully simulated the loading in tension, I&#8217;m struggling with the compression case, which is something like this:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/55a6e19b-e84d-4051-b632-aa9a01208530\/95e5d0e3-0531-49d7-953b-ab1e00e39019_2.jpg?width=690&amp;upscale=false\" alt=\"\">so i fixed the yellow sleeve, and applied a remote force on the green sleeve (both sleeves are rigid bodies)<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/55a6e19b-e84d-4051-b632-aa9a01208530\/0e4f1e26-d928-453a-9c09-ab1e00e46637_3.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>here i hide the green sleeve, to show the fixed support on the end of the flexible elements (which are bonded to the sleeves). I then applied a remote force on the yellow sleeve.<\/p>\n<p><\/p>\n<p>When I try to solve, I get something like this:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/55a6e19b-e84d-4051-b632-aa9a01208530\/0c7e495a-c1ef-48b6-957b-ab1e00e54180_4.jpg?width=690&amp;upscale=false\" alt=\"\">&nbsp;<\/p>\n<p><\/p>\n<p>This is what I get after already trying to solve the bisection issue by increasing the initial substeps with a factor of 5 from 100 to 500, and after increasing the mesh refinement where the Newton-Raphson residual told me to. Now I&#8217;m out of ideas.<\/p>\n<p><\/p>\n<p>Here is the model if anyone wants to take a look at it:<\/p>\n<p><\/p>\n<p><a href=\"https:\/\/drive.google.com\/file\/d\/1NsHx6BeRY8W1aO4cWu81bKvwD_S8hhSu\/view\">https:\/\/drive.google.com\/file\/d\/1NsHx6BeRY8W1aO4cWu81bKvwD_S8hhSu\/view<\/a><\/p>\n<p><\/p>\n<p>Thanks in advance for the suggestions<\/p>\n<p><\/p>\n<p>Edoardo<\/p>\n","protected":false},"template":"","class_list":["post-39491","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["11670"],"_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"],"_btv_view_count":["742"],"_bbp_subscription":["241770"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["39491"],"_bbp_forum_id":["27791"],"_bbp_engagement":["200","167219"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["100987"],"_bbp_last_active_id":["100987"],"_bbp_last_active_time":["2019-12-17 07:52:18"]},"test":"edoardo"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/39491","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\/39491\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=39491"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}