{"id":283447,"date":"2023-05-11T12:29:09","date_gmt":"2023-05-11T12:29:09","guid":{"rendered":"\/forum\/forums\/topic\/why-are-all-incompressibility-parameters-0-when-i-use-ansys-curve-fitting\/"},"modified":"2023-05-11T12:29:09","modified_gmt":"2023-05-11T12:29:09","slug":"why-are-all-incompressibility-parameters-0-when-i-use-ansys-curve-fitting","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/why-are-all-incompressibility-parameters-0-when-i-use-ansys-curve-fitting\/","title":{"rendered":"Why are all incompressibility parameters = 0 when I use ANSYS curve fitting?"},"content":{"rendered":"<p>Hello, I have been trying to use different material models in ANSYS by inputting experimentally obtained data for highly non-linear materials (e.g., silicone). However, when I use the curve fitting tool, the incompressibility parameter(s) are always 0 &#8211; why is this? I feel that something isn&#8217;t being calculated correctly.<\/p>\n<p>Any advice would be really appreciated, thanks!<\/p>\n","protected":false},"template":"","class_list":["post-283447","topic","type-topic","status-closed","hentry","topic-tag-curve-fitting","topic-tag-material-properties","topic-tag-mechanical","topic-tag-neo-hookean","topic-tag-non-linear","topic-tag-static-structural","topic-tag-transient-structural"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["224490","88"],"_bbp_author_ip":["23.39.172.6"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1308"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["283447"],"_bbp_forum_id":["27815"],"_bbp_engagement":["88","224490"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["283601"],"_bbp_last_active_id":["283601"],"_bbp_last_active_time":["2023-05-12 10:26:52"]},"test":"kmd1e19soton-ac-uk"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/283447","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\/283447\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=283447"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}