{"id":42621,"date":"2020-04-09T14:48:46","date_gmt":"2020-04-09T14:48:46","guid":{"rendered":"\/forum\/forums\/topic\/having-convergence-issues-simulating-a-rubber-bellow\/"},"modified":"2020-04-09T14:48:46","modified_gmt":"2020-04-09T14:48:46","slug":"having-convergence-issues-simulating-a-rubber-bellow","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/having-convergence-issues-simulating-a-rubber-bellow\/","title":{"rendered":"Having convergence issues simulating a rubber bellow"},"content":{"rendered":"<p>Hello everyone,<\/p>\n<p><\/p>\n<p>I am trying to simulate a rubber bellow using the VMQ silicone hyperelastic material. The bellow is deformed in the x-direction by 16 mm. I am trying to solve this problem in the static structural using the implicit solver. However no matter what I do, I always run into convergence problems after passing approx. 8 mm travel in x-direction. I also activated the Nonlinear Adaptive Region with 10 loops and removed the cyclic symmetrie, which I had before. Since activating the Nonlinear Adaptive Region I get the following Error:<\/p>\n<p><\/p>\n<p><em>The result cannot be evaluated because it has (1) an invalid scoping on a body with a changing mesh or (2) an invalid scoping when the result file is the mesh source. Body scoping is required for the result.<\/em><\/p>\n<p><\/p>\n<p>I know, explicit dynamics with this kind of large nonlinearity is the way to go, but as I am simulation multiple geometry variants, the explicit solver will be too time-consuming. Can you guys please help me out?<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-42621","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["14801"],"_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":["1045"],"_bbp_subscription":["246536"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["42621"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","172241"],"_bbp_voice_count":["2"],"_bbp_reply_count":["9"],"_bbp_last_reply_id":["112025"],"_bbp_last_active_id":["112025"],"_bbp_last_active_time":["2020-04-22 01:59:50"]},"test":"usman786"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/42621","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\/42621\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=42621"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}