{"id":346752,"date":"2024-01-26T11:18:15","date_gmt":"2024-01-26T11:18:15","guid":{"rendered":"\/forum\/forums\/topic\/modelling-stress-relaxation-for-viscoelastic-material-with-many-time-steps\/"},"modified":"2024-01-26T11:18:15","modified_gmt":"2024-01-26T11:18:15","slug":"modelling-stress-relaxation-for-viscoelastic-material-with-many-time-steps","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/modelling-stress-relaxation-for-viscoelastic-material-with-many-time-steps\/","title":{"rendered":"Modelling stress relaxation for viscoelastic material with many time steps"},"content":{"rendered":"<p>Dear all,<\/p>\n<p>I&#8217;m trying to model the stress relaxation behaviour of a material after deforming it. I have curve fitted the Prony series for this model to make my material behave viscoelastically and I have some generic linear elastic properties. In order to deform the model, I need many time steps in order to have a converging solution, but these timesteps already include some stress relaxation behaviour due to the viscoelastic material model. I would like to create a seemingly instantaneous linear elastic deformation,&nbsp;<em>then<\/em> activate the viscoelastic properties and see what happens. I have tried using the MPCHG command, but this of course does not work for nonlinear material models. Is there anyone who can give me a lead on this?<\/p>\n<p>With kind regards,<\/p>\n<p>Thies<\/p>\n","protected":false},"template":"","class_list":["post-346752","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["28016","9935"],"_bbp_author_ip":["23.206.193.59"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["388"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["346752"],"_bbp_forum_id":["27791"],"_bbp_engagement":["9935","28016"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["347218"],"_bbp_last_active_id":["347218"],"_bbp_last_active_time":["2024-01-30 08:44:46"]},"test":"m-blaakmanstudent-tudelft-nl"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/346752","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\/346752\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=346752"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}