{"id":39759,"date":"2019-12-21T11:33:33","date_gmt":"2019-12-21T11:33:33","guid":{"rendered":"\/forum\/forums\/topic\/convergence-issue\/"},"modified":"2019-12-21T11:33:33","modified_gmt":"2019-12-21T11:33:33","slug":"convergence-issue","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/convergence-issue\/","title":{"rendered":"Convergence issue"},"content":{"rendered":"

Hello,<\/p>\n

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As i know, if the criterion graph would be the above of the value graph, substep will converge and analysis move on. In my analysis everything seems okay about graph side but substeps not converge.<\/p>\n

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I have two similar cases. Only differences between them is contact detection types. In the both cases i used face-to-face (both solids) frictional contact. Geometrically two parts are coincident due to contact faces. First i tried turn on Adjust-to-touch option. But when i solved the contact tool, i observed the surfaces is mostly sliding not sticking even if the faces are geometrically coincident.<\/p>\n

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Then i tried to change Adjust-to-touch option to Add-offset-no-ramping and the offset value is equal to e-10. Detection type of the frictional contact which i used, were stayed program controlled. I assume program controlled option is prioritize the Gauss-point method. My case just solved. <\/p>\n

<\/p>\n

And in my other case, i used the same model as i mentioned above. I just changed the detection type of the inital contact. I mean Interface Treatment was set to Adjust to touch and Detection method was set to Nodal-Normal to Target. In this case i’m receiving a probem that i mentioned at the beginning. I’m going to share the screenshots about the force-disp-moment graphs during the solution.<\/p>\n

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Why is this happening ? How could i solve ?<\/p>\n

<\/p>\n

\"Force<\/p>\n

<\/p>\n

\"Displacement<\/p>\n

<\/p>\n

\"Moment<\/p>\n

<\/p>\n

 <\/p>\n

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 <\/p>\n","protected":false},"template":"","class_list":["post-39759","topic","type-topic","status-closed","hentry","topic-tag-convergence-problem-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["11938"],"_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":["6656"],"_bbp_subscription":["246018"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["39759"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","171685"],"_bbp_voice_count":["2"],"_bbp_reply_count":["10"],"_bbp_last_reply_id":["101477"],"_bbp_last_active_id":["101477"],"_bbp_last_active_time":["2019-12-23 14:39:23"]},"test":"ozan"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/39759","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\/39759\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=39759"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}