{"id":161636,"date":"2021-08-26T14:00:06","date_gmt":"2021-08-26T14:00:06","guid":{"rendered":"\/forum\/forums\/topic\/orthotropic-material-properties-relative-to-surface-of-geometry-human-bone\/"},"modified":"2021-09-02T19:38:14","modified_gmt":"2021-09-02T19:38:14","slug":"orthotropic-material-properties-relative-to-surface-of-geometry-human-bone","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/orthotropic-material-properties-relative-to-surface-of-geometry-human-bone\/","title":{"rendered":"Orthotropic material properties relative to surface of geometry &#8211; Human bone"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>When defining material properties for human bone, I&#039;m using the surface coating feature in order to create an outer shell of cortical bone while the infill consists of solid geometry with trabecular bone properties. <\/p>\n<p>I want to ensure that the orthotropic properties of the cortical bone is relative to the surface of the geometry and not the global coordinate system. I am aware that this is possible to achieve with the ACP-tool. Explained in the discussion thread linked to: <a href=\"\/forum\/discussion\/comment\/126002#Comment_126002\" rel=\"nofollow\">\/forum\/discussion\/comment\/126002#Comment_126002<\/a>, the surface coating feature creates shell elements on the selected surface. When I&#039;m trying to open the model in ACP, however, the following error messages show up:<\/p>\n<p>&quot;The mesh doesn&#039;t contain any shell elements. This may be because the model is not compatible with Section Data providers.&quot;<\/p>\n<p>&quot;ACP Input Validation Failure. There is no data contained in the input mesh file&quot;<\/p>\n<ul>\n<li>Is the surface coating feature not compatible with the ACP-tool? Is there any way to solve this?<\/li>\n<\/ul>\n<p>I have been trying to find a workaround for the problem, using the element orientation in mechanical (Geometry&rarr;Modify&rarr;Element Orientation), which visually (pictured below), at least, seems to be an alternative to the ACP-proces. However, I can&#039;t figure out how to link the element orientation with the orthotropic material properties of the cortical bone.<\/p>\n<ul>\n<li>Is there a way to do this or any alternative measures for ensuring proper orientation of the orthotropic properties? (2021 R2)<\/li>\n<\/ul>\n<div class=\"embedExternal embedImage\">\n<div class=\"embedExternal-content\">\n<a class=\"embedImage-link\" href=\"\/forum\/wp-content\/uploads\/forum-uploads\/186\/ND848ZSCBZ5D.png\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" class=\"embedImage-img\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/186\/ND848ZSCBZ5D.png\" alt=\"image.png\" \/><br \/>\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-161636","topic","type-topic","status-closed","hentry","topic-tag-acp","topic-tag-element-orientation-1","topic-tag-humanbone-1","topic-tag-orthotropic","topic-tag-orthotropic-materials"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":[""],"_bbp_view_count":["236"],"_bbp_likes_count":["0","0"],"_bbp_forum_subforum_count":["0"],"_btv_view_count":["1028"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["161636"],"_bbp_forum_id":["27790"],"_bbp_engagement":["6","213784"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["190054"],"_bbp_last_active_id":["190054"],"_bbp_last_active_time":["2021-09-02 19:38:14"]},"test":"jonaslindberg11hotmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/161636","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\/161636\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=161636"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}