{"id":371977,"date":"2024-07-15T17:18:01","date_gmt":"2024-07-15T17:18:01","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/convergence-problem-when-going-from-2023-r1-to-r2\/"},"modified":"2024-07-15T17:18:01","modified_gmt":"2024-07-15T17:18:01","slug":"convergence-problem-when-going-from-2023-r1-to-r2","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/convergence-problem-when-going-from-2023-r1-to-r2\/","title":{"rendered":"Convergence problem when going from 2023 R1 to R2"},"content":{"rendered":"<p>Hi,<br \/>I would like your help since I am a stuck with this problem.<br \/>Context:<br \/>I solve a transient and nonlinear TE simulation with standard Newton-Raphson.<br \/>&#8211; With 2023 R1 version, the model is very stable and converges very well (symmetric global matrix)<br \/>&#8211; With 2023 R2 version, the model no longer converges (non- symmetric global matrix)<br \/>I noticed that:<br \/>&#8211; With 2023 R1 version , the model generates a symmetric global matrix<br \/>&#8211; With 2023 R2 version, the model generates a non-symmetrical global matrix, possibly brought about by the addition of new terms in elementary calculation<br \/>My question:<br \/>&#8211; What caused this non-symmetry in 2023 R2 version?<br \/>Is there an option somewhere that eliminates the consideration of this non-symmetry (to generate a symmetric global matrix)?<br \/>Thank you very much for your help.<\/p>\n","protected":false},"template":"","class_list":["post-371977","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["2773","88","20905"],"_bbp_author_ip":["132.212.153.54"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["161"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["371977"],"_bbp_forum_id":["27791"],"_bbp_engagement":["88","2773","20905"],"_bbp_voice_count":["3"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["373421"],"_bbp_last_active_id":["373421"],"_bbp_last_active_time":["2024-07-24 13:38:55"]},"test":"simon-olivier1_tremblayuqac-ca"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/371977","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\/371977\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=371977"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}