{"id":160346,"date":"2021-07-13T15:50:46","date_gmt":"2021-07-13T15:50:46","guid":{"rendered":"\/forum\/forums\/topic\/knee-joint-contact-problem-leading-to-convergence-issues\/"},"modified":"2021-09-07T13:00:49","modified_gmt":"2021-09-07T13:00:49","slug":"knee-joint-contact-problem-leading-to-convergence-issues","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/knee-joint-contact-problem-leading-to-convergence-issues\/","title":{"rendered":"Knee joint contact problem leading to convergence issues"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Dear <a class=\"atMention\" data-username=\"peteroznewman\" data-userid=\"636\" href=\"https:\/\/forum.webdevonline.net\/profile\/peteroznewman\">@peteroznewman<\/a> <\/p>\n<p>greetings of the day&#8230;i am trying to perform a static structural analysis of knee joint. My model involves 10 parts (including ligaments cartilage etc) and 13 contacts (frictional and bonded). To save time I tried to simplify the model and started experimenting on it.<\/p>\n<p>Mesh is created in Altair hypermesh software and it is exported as cdb file to Ansys wb.<\/p>\n<p>In ansys workbench i have created contacts,boundary conditions,loading.<\/p>\n<p>I went through all discussions on biomechanic contacts in this forum before writing to you.<\/p>\n<p>I also went through youtube tutorials by ansys learning page.<\/p>\n<p>I have tried the following with respect to contact.<\/p>\n<ol>\n<li>different formulations tried with different detection methods to get convergence.<\/li>\n<li>changing the normal stiffness inorder to achieve convergence.<\/li>\n<li>increasing the number of substeps to apply displacement load slowly to achieve convergence<\/li>\n<li>tried changing the behavior of contact as explained in youtube video by ansys learning page.<\/li>\n<li>contact interface treatment also tried to change.<\/li>\n<li>mesh is refined using solid 185 elements in hypermesh.<\/li>\n<li>Even after all these i am not able to get the convergence.. Can you help?<\/li>\n<li>i can send the simplified model to you.<\/li>\n<\/ol>\n<p>Thanks for your time and help. have a great day!.<\/p>\n","protected":false},"template":"","class_list":["post-160346","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Dear @peteroznewman greetings of the day...i am trying to perform a static structural analysis of knee joint. My model involves 10 parts (including ligaments cartilage etc) and 13 contacts (frictional and bonded). 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