{"id":53990,"date":"2021-03-29T12:42:25","date_gmt":"2021-03-29T12:42:25","guid":{"rendered":"\/forum\/forums\/topic\/specifying-bilinear-stress-strain-of-orthotropic-material-in-ansys-mechanical\/"},"modified":"2021-03-29T12:42:25","modified_gmt":"2021-03-29T12:42:25","slug":"specifying-bilinear-stress-strain-of-orthotropic-material-in-ansys-mechanical","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/specifying-bilinear-stress-strain-of-orthotropic-material-in-ansys-mechanical\/","title":{"rendered":"Specifying bilinear stress\/strain of orthotropic material in ANSYS Mechanical?"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hello,<\/p>\n<p>I am studying the load distribution of a ceramic-matrix-composite bolted joint and wish to incorporate the bi-modulus relationship between the tensile stress and strain, specified by the initial modulus, matrix cracking stress, material stiffness reduction factor and ultimate stress. I would like to use this material model for the in plane stresses of the composite substrate (x,y here) and hence have a better prediction of the stress for given strain.<\/p>\n<p>According to the Mechanical APDL Element reference the code to use is TB, ANISO with 18 constants defined by TBDATA, however, I don&#039;t know how do add this as an external APDL command in workbench. <\/p>\n<p>Here is a screen shot from the manual<\/p>\n<div class=\"embedExternal embedImage\">\n<div class=\"embedExternal-content\">\n<a class=\"embedImage-link\" href=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/EH0SWCHOMVYE\/image.png\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" class=\"embedImage-img\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/EH0SWCHOMVYE\/image.png\" alt=\"image.png\" \/><br \/>\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-53990","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["26315"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":["*\u0001?\u001d?x?\u0000?Y??\fhy?"],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["932"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["53990"],"_bbp_forum_id":["27791"],"_bbp_engagement":["99","188075"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["148872"],"_bbp_last_active_id":["148872"],"_bbp_last_active_time":["2021-03-30 20:14:17"]},"test":"raphikk"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/53990","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\/53990\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=53990"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}