{"id":283665,"date":"2023-05-12T13:26:17","date_gmt":"2023-05-12T13:26:17","guid":{"rendered":"\/forum\/forums\/topic\/hyperelastic-simulation-yeoh-3rd-model-order-fails-to-converge-2\/"},"modified":"2023-05-12T13:26:17","modified_gmt":"2023-05-12T13:26:17","slug":"hyperelastic-simulation-yeoh-3rd-model-order-fails-to-converge-2","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/hyperelastic-simulation-yeoh-3rd-model-order-fails-to-converge-2\/","title":{"rendered":"Hyperelastic simulation (Yeoh 3rd model) order fails to converge"},"content":{"rendered":"<p>Hi all,<br \/>I am carrying out a hyperelastic simulation with Ecoflex-30 as a material (Yeoh 3rd degree model, with the following characteristics: C1 = 17 kPa, C2 =-0.2kPa , C3 = 2.3e-2 kPa).<br \/>As shown in the following photo, I am carrying the simulation on a thick cylinder of internal radius ri = 8 mm and external radius rex = 10 mm. The total length of the cylinder is 58mm. One end of the cylinder is fixed while its interior is pressurized with air.<br \/>The simulation is carried out with 100 steps (auto time stepping on. Initial, Minimum, and Maximum substeps all set to 100. Large deflections are activated. I set Keyopt(6) = 1 for the body as I have seen that it helps the solution to converge. The mesh is tetrahedral.<br \/>No matter what I do the simulation always fails at the same point (at 58%). I tried increasing the number steps from 100 to 250, refining the mesh, activating\/deactivating the nonlinear adaptive region, increasing the number of substeps, etc&#8230; but the solution always fails at the same point (58%).<br \/>Before, the error stated that SOLID187 is experiencing high distortion but after some modifications the error only says that the solution can&#8217;t converge at a substep of this step&#8230;<br \/>Do you have any idea how can I fix this problem?<br \/>Thanks in advance.<br \/>Note: I have to use a yeoh model for the ecoflex-30<img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/05\/12-05-2023-1683897918-simulation.PNG\" alt=\"\"><\/p>\n","protected":false},"template":"","class_list":["post-283665","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["257788","13386","240"],"_bbp_author_ip":["23.39.172.22"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1040"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["283665"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","13386","257788"],"_bbp_voice_count":["3"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["283785"],"_bbp_last_active_id":["283785"],"_bbp_last_active_time":["2023-05-13 16:33:43"]},"test":"zeinab-awadaumontpellier-fr"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/283665","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\/283665\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=283665"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}