{"id":289453,"date":"2023-06-19T22:10:19","date_gmt":"2023-06-19T22:10:19","guid":{"rendered":"\/forum\/forums\/topic\/highly-distorted-elements-near-bolt-holes\/"},"modified":"2023-06-19T22:10:19","modified_gmt":"2023-06-19T22:10:19","slug":"highly-distorted-elements-near-bolt-holes","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/highly-distorted-elements-near-bolt-holes\/","title":{"rendered":"Highly distorted elements near bolt holes"},"content":{"rendered":"<p>Hello Community,<\/p>\n<p>I was simulating cracks near bolt holes using Cohesive zone model (pure penalty formulation) to define the debonding.<\/p>\n<p>As shown in Fig.1, i always saw the elements near the bolt hole were highly distored due to stress concentration. They were smooth at the beginning. THe red lines are the predefined cracks using CZM material.&nbsp;<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/06\/19-06-2023-1687212236-3.png\" alt=\"\"><\/p>\n<p>As shown in Fig.2, the frictional contact between bolt and its surrounding material was created. I also figured a great amount of penetration there.<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/06\/19-06-2023-1687212311-4.png\" alt=\"\"><\/p>\n<p>I guess both led to divergence of solutions. In Fig. 3, I also attached a screenshots of the initial info of the frictional contact i defined for the bolt and CZM bonded contact.<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/06\/19-06-2023-1687212438-6.png\" alt=\"\"><\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/06\/19-06-2023-1687212505-7.png\" alt=\"\"><\/p>\n<p>Hope someone can give some help for me. Thank you very much!<\/p>\n<p>Regards,<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-289453","topic","type-topic","status-closed","hentry","topic-tag-ansysworkbench-ansys-staticstructural","topic-tag-cohesive-zone-modeling","topic-tag-highly-distorted-elements","topic-tag-surface-penetration-2"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["241178","99"],"_bbp_author_ip":["96.7.74.173"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["527"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["289453"],"_bbp_forum_id":["27791"],"_bbp_engagement":["99","241178"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["289875"],"_bbp_last_active_id":["289875"],"_bbp_last_active_time":["2023-06-22 07:04:30"]},"test":"gao13mail-ubc-ca"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/289453","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\/289453\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=289453"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}