{"id":291099,"date":"2023-06-30T15:29:37","date_gmt":"2023-06-30T15:29:37","guid":{"rendered":"\/forum\/forums\/topic\/twist-of-springs\/"},"modified":"2023-07-03T10:51:53","modified_gmt":"2023-07-03T10:51:53","slug":"twist-of-springs","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/twist-of-springs\/","title":{"rendered":"Twist of springs"},"content":{"rendered":"<p>Hi everyone. For a two-way FSI simulation of flow over a cylinder, I defined four springs (body-to-ground) with similar stiffness in transient structural ANSYS. With the defined inlet velocity of flow in CFX, I expect to get the resonance amplitude in transient structural. But after 20 seconds, the simulation got diverged. In the result, it seems springs start twisting because of the nonlinearity of the problem. How could I solve this problem? <a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/06\/30-06-2023-1688138721-Cylinder with four springs.png\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/06\/30-06-2023-1688138721-Cylinder with four springs.png\" alt=\"\"><\/a><\/p>\n","protected":false},"template":"","class_list":["post-291099","topic","type-topic","status-closed","hentry","topic-tag-convergenceerror-1","topic-tag-fsi-simulation","topic-tag-nonlinearconvergenceissue-1","topic-tag-spring-modelling-1","topic-tag-static-structrural-2"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["29207","20905","240"],"_bbp_author_ip":["23.206.193.154"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["773"],"_edit_lock":["1688381497:220423"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["291099"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","20905","29207"],"_bbp_voice_count":["3"],"_bbp_reply_count":["8"],"_bbp_last_reply_id":["291692"],"_bbp_last_active_id":["291692"],"_bbp_last_active_time":["2023-07-05 15:27:06"]},"test":"pegah-mehrabianpolymtl-ca"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/291099","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\/291099\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=291099"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}