{"id":235364,"date":"2022-09-15T14:15:08","date_gmt":"2022-09-15T14:15:08","guid":{"rendered":"\/forum\/forums\/topic\/artefacts-between-contact-surfaces-in-mechanical\/"},"modified":"2022-09-22T23:10:39","modified_gmt":"2022-09-22T23:10:39","slug":"artefacts-between-contact-surfaces-in-mechanical","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/artefacts-between-contact-surfaces-in-mechanical\/","title":{"rendered":"Artefacts between contact surfaces in mechanical"},"content":{"rendered":"<p>Hi,<\/p>\n<p>I&#8217;ve been struggling with the simulation for a while, trying multiple combinations of the contact parameters to reduce&nbsp; the penetration between 2 objects but now that the penetration is reduced, the target surface appears very bumpy (what I assume is artefact) but because of that I can&#8217;t re-use the mesh in another simualtion.&nbsp;<\/p>\n<p>my contact is frictional (you can imagine a head growing in a partly restrictive helmet) some areas are already in contact when the heead starts growing. The parameters I&#8217;ve defined so far are:<\/p>\n<p>1) detection method: pure penalty<\/p>\n<p>2) small sliding: off<\/p>\n<p>3) Normal stiffness:&nbsp; 1<\/p>\n<p>4) interface treatment: adjust to touch&nbsp;<\/p>\n<p>I&#8217;ve tried changing the pinball radius but it only increases the simulation time (so far around 14 hours)<\/p>\n<p>Any ideas or suggestions are very welcome!<\/p>\n<p>Thanks \ud83d\ude42<\/p>\n<p>Lara<\/p>\n","protected":false},"template":"","class_list":["post-235364","topic","type-topic","status-closed","hentry","topic-tag-ansysworkbench-ansys-staticstructural","topic-tag-ansys-mechanical","topic-tag-frictional-contact","topic-tag-non-penetrationcontact-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["190005","240"],"_bbp_author_ip":["23.77.218.220"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["596"],"_bbp_status":["publish"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["235364"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","190005"],"_bbp_voice_count":["2"],"_bbp_reply_count":["28"],"_bbp_last_reply_id":["236112"],"_bbp_last_active_id":["236112"],"_bbp_last_active_time":["2022-09-22 23:09:35"]},"test":"laradlg"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/235364","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\/235364\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=235364"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}