{"id":50904,"date":"2020-12-29T03:32:32","date_gmt":"2020-12-29T03:32:32","guid":{"rendered":"\/forum\/forums\/topic\/two-questions-about-hyperelastic-simulation\/"},"modified":"2020-12-29T03:32:32","modified_gmt":"2020-12-29T03:32:32","slug":"two-questions-about-hyperelastic-simulation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/two-questions-about-hyperelastic-simulation\/","title":{"rendered":"Two questions about hyperelastic simulation"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hello<\/p>\n<p>I am performing hyperelastic material(EPDM) simulation using Yeoh 3rd Order. Both uniaxial test data and biaxial test data are used for curve fitting. The fitting result seems good as shown in Fig.1<\/p>\n<p>My questions are:<\/p>\n<p>1\/Both my test data(uniaxial and biaxial) only contains tension(positive strain?) data, is it enough for a compressing load simulation as shown in Fig.2 ?<\/p>\n<p>2\/I launched a tensile case to validate the material model, but I found that there is gap between test and simulation as shown in Fig.3. What is the cause of this gap? Is it because I didn&#039;t introduce compressibility? <\/p>\n<p>I attached Ansys file with version 2020 R1 if anyone is willing to check. Thank you in advance. Will you a happy new year! <\/p>\n<\/p>\n<p>Fig.1<\/p>\n<div class=\"embedExternal embedImage\">\n<div class=\"embedExternal-content\">\n<a class=\"embedImage-link\" href=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/NB81R5OPZBHT\/image.png\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" class=\"embedImage-img\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/NB81R5OPZBHT\/image.png\" alt=\"image.png\" \/><br \/>\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-50904","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["23158"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":["}_\u00116"],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["434"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["50904"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","183572"],"_bbp_voice_count":["2"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["137244"],"_bbp_last_active_id":["137244"],"_bbp_last_active_time":["2020-12-31 07:54:39"]},"test":"haiquan"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/50904","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\/50904\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=50904"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}