{"id":40853,"date":"2020-02-11T23:04:06","date_gmt":"2020-02-11T23:04:06","guid":{"rendered":"\/forum\/forums\/topic\/viscoelastic-modeling-in-ansys\/"},"modified":"2020-02-11T23:04:06","modified_gmt":"2020-02-11T23:04:06","slug":"viscoelastic-modeling-in-ansys","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/viscoelastic-modeling-in-ansys\/","title":{"rendered":"Viscoelastic Modeling in ANSYS"},"content":{"rendered":"<p>Hello, I have a couple of questions. If you can, please answer separately with the question number.&nbsp;<\/p>\n<p>1. let&#8217;s say I have prony series data for shear modulus. Do I also need to input &#8220;prony series for bulk modulus&#8221;? Or only initial bulk modulus, K0 (or other combination like young and poisson) will be enough?&nbsp;<\/p>\n<p><\/p>\n<p>2. Since viscoelastic is time and rate-dependent property, do I need to use &#8220;transient analysis&#8221;? The reason behind my confusion is that I have done simple stress relaxation simulation in &#8220;static structural&#8221;. I know in static structural time is not the actual time. But I intentionally define the viscoelastic property such that the first relaxation time lets say 5 seconds. Then in &#8220;static structural&#8221; I gave 20 time step (each 1 sec) and kept strain fixed to some value. What I saw that the stress relaxes in 5-6 sec. So I was really confused to see that in static structural, stress relaxation is happening. So I am asking if this is acceptable? Or I should do the transient analysis? Thanks.&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-40853","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["13033"],"_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":["2072"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["40853"],"_bbp_forum_id":["27791"],"_bbp_engagement":["79","155230"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["107639"],"_bbp_last_active_id":["107639"],"_bbp_last_active_time":["2020-03-12 13:59:52"]},"test":"fuad87"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/40853","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\/40853\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=40853"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}