{"id":39189,"date":"2019-11-25T19:49:01","date_gmt":"2019-11-25T19:49:01","guid":{"rendered":"\/forum\/forums\/topic\/cylinder-head-gasket-nonlinear-material-model\/"},"modified":"2019-11-25T19:49:01","modified_gmt":"2019-11-25T19:49:01","slug":"cylinder-head-gasket-nonlinear-material-model","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cylinder-head-gasket-nonlinear-material-model\/","title":{"rendered":"Cylinder head gasket &#8211; nonlinear material model"},"content":{"rendered":"<p>Good evening,<\/p>\n<p><\/p>\n<p>In my masters thesis, I am modelling cylinder distortion of combustion engine caused by a cylinder head bolts. The assembly consist of engine block, cylinder sleeves, head gasket, cylinder head and some bolts. I managed to succesfully run the simulation and obtain credible results with linear material models.&nbsp;<\/p>\n<p><\/p>\n<p>My next step is to use nonlinear material model for cylinder head gasket, since its behaviour is strongly unlinear. I managed to measure the compression material characteristics on Zwick\/Roell universal testing machine on the real head gasket.<\/p>\n<p><\/p>\n<p>I obtained Force (N) vs. Closure (deformation in mm) of given gasket and then I calculated stress from the area of test sample. See picture.<\/p>\n<p><\/p>\n<p>Now, I need to implement those results in my Workbench analysis. I have tried &#8220;Gasket&#8221; material model in ansys library, where I put in&nbsp;stress vs closure, but I&nbsp;the computing time was abnormal and it eventually did not converge.&nbsp;<\/p>\n<p><\/p>\n<p>Could you advise me what are my other options in terms of implementing those data? What material model should I use?<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/e138cb3e-12ac-4bba-b4e1-ab10014240ee\/6bf5174b-f15e-42af-a45a-ab100146af72_gasket.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>&nbsp;Best regards, Thomas<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-39189","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["11368"],"_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":["1917"],"_bbp_subscription":["245275"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["39189"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","170921"],"_bbp_voice_count":["2"],"_bbp_reply_count":["8"],"_bbp_last_reply_id":["99304"],"_bbp_last_active_id":["99304"],"_bbp_last_active_time":["2019-11-26 15:52:21"]},"test":"tommy11490"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/39189","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\/39189\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=39189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}