{"id":428135,"date":"2025-04-07T10:53:37","date_gmt":"2025-04-07T10:53:37","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/get-prony-parameters-for-visoelastmodel-based-on-creep-curves\/"},"modified":"2025-04-07T10:53:37","modified_gmt":"2025-04-07T10:53:37","slug":"get-prony-parameters-for-visoelastmodel-based-on-creep-curves","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/get-prony-parameters-for-visoelastmodel-based-on-creep-curves\/","title":{"rendered":"Get Prony Parameters for Visoelast.Model Based on Creep Curves"},"content":{"rendered":"<p>&lt;p&gt;Dear Ansys Community,&lt;\/p&gt;&lt;p&gt;I want to set up a viscoelastic material model based on creep curves (stress vs. time curves for various stress levels). The curves could look like this:&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/04\/07-04-2025-1744022661-mceclip0.png\" width=\"617\" height=\"254\" \/>&lt;\/p&gt;&lt;p&gt;The material model should be based on prony series, what is already implemented in Ansys. The material model can easily be set up based on shear relaxation curves (which I don&#8217;t have). Since creep curves &#8211; as shown above &#8211; are much more common (the experimental setup is much simpler) I asked myself, if there is also a method to get the prony series parameters based on creep curves.&lt;\/p&gt;&lt;p&gt;I know creep material models (like mod. time hardening) can directly by setup based on creep curves (there is a curve fitting procedure accessible in Ansys Classic). In my case, I&#8217;m specifically interested in the viscoelastic approach.&lt;\/p&gt;&lt;p&gt;Many Thanks in advance.&lt;br&gt;Greetings,&lt;br&gt;Georg&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-428135","topic","type-topic","status-publish","hentry","topic-tag-prony-series-1","topic-tag-visco-elasticity-2"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27791"],"_bbp_topic_id":["428135"],"_bbp_author_ip":["2.205.72.241"],"_bbp_last_reply_id":["429346"],"_bbp_last_active_id":["429346"],"_bbp_last_active_time":["2025-04-17 22:35:40"],"_bbp_reply_count":["2"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["3"],"_bbp_engagement":["34949","99","480261"],"_btv_view_count":["1097"],"_bbp_topic_status":["unanswered"],"_bbp_subscription":["99","480261"],"_bbp_notification_enabled":["480261"]},"test":"georg-gruberhtw-berlin-de"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/428135","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\/428135\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=428135"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}