{"id":41473,"date":"2020-03-04T10:43:58","date_gmt":"2020-03-04T10:43:58","guid":{"rendered":"\/forum\/forums\/topic\/strange-stress-in-the-bolts-and-bolt-region\/"},"modified":"2020-03-04T10:43:58","modified_gmt":"2020-03-04T10:43:58","slug":"strange-stress-in-the-bolts-and-bolt-region","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/strange-stress-in-the-bolts-and-bolt-region\/","title":{"rendered":"Strange stress in the bolts and bolt region"},"content":{"rendered":"<p>Hey, I am simulating&nbsp;the connection of a structure that is being pulled by a chain, according to the drawing<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/44b2c4eb-7000-43d0-bfde-ab71014d4f61\/12bbd266-635b-442f-83d6-ab7400af5cfd_untitled.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>This connection is attached to the rest of the structure (square body) by the bolts. However, I am having some problems with the results. Some of the stresses are very high and do not seem proper. I simulate this case with a fine mesh (element sizes in the bolted contact region were 4x smaller than the pitch distance) and here are some of the results that I got.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/44b2c4eb-7000-43d0-bfde-ab71014d4f61\/e34e6512-907a-403f-a1bf-ab7400ade983_bolts1.jpg?width=690&amp;upscale=false\" alt=\"\"><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/44b2c4eb-7000-43d0-bfde-ab71014d4f61\/c8a8b029-1526-4061-9e16-ab7400ae22aa_stress1.jpg?width=690&amp;upscale=false\" alt=\"\"><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/44b2c4eb-7000-43d0-bfde-ab71014d4f61\/0d2bf2a8-8775-4d59-8afa-ab7400ae2ded_base1.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>Since the stresses are so concentrated in a very specific reason, I am doubting these results. Is someone already experience something similar?&nbsp;&nbsp;<\/p>\n<p><\/p>\n<p>P.S.: Since the simulation with the bolted case takes so long due to the mesh refinement requirement, I also attached the project with a more coarse mesh and with bonded contacts. The results&nbsp;look similar<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/44b2c4eb-7000-43d0-bfde-ab71014d4f61\/ff597b34-868f-4e11-9dca-ab7400b0a186_base2.jpg?width=690&amp;upscale=false\" alt=\"\"><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/44b2c4eb-7000-43d0-bfde-ab71014d4f61\/a1755cc9-8caa-469e-9013-ab7400b0b0a9_bolts2.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-41473","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["13653"],"_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":["1393"],"_bbp_subscription":["248107"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["41473"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","65839"],"_bbp_voice_count":["2"],"_bbp_reply_count":["7"],"_bbp_last_reply_id":["107337"],"_bbp_last_active_id":["107337"],"_bbp_last_active_time":["2020-03-10 07:57:58"]},"test":"jbarc"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/41473","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\/41473\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=41473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}