{"id":159303,"date":"2021-06-09T09:24:45","date_gmt":"2021-06-09T09:24:45","guid":{"rendered":"\/forum\/forums\/topic\/deactivate-thermal-expansion-coefficient-at-a-specific-load-step\/"},"modified":"2021-06-10T23:45:21","modified_gmt":"2021-06-10T23:45:21","slug":"deactivate-thermal-expansion-coefficient-at-a-specific-load-step","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/deactivate-thermal-expansion-coefficient-at-a-specific-load-step\/","title":{"rendered":"Deactivate thermal expansion coefficient at a specific load step"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>I am working on an elastomeric O-ring seal analysis at different temperatures in ANSYS Workbench (Mechanical). Generally, I use 4 load steps<\/p>\n<p> (LS1: stretch O-ring on piston, <\/p>\n<p>LS2: assembly piston with O-ring in cylinder, <\/p>\n<p>LS3: cooling from 23&deg;C to -60&deg;C, <\/p>\n<p>LS4: pressure load).<\/p>\n<p>I am using a complex visco-hyperelastic material model with WLF-shift function. <\/p>\n<p>This model of course includes the thermal expansion coefficient too. Now I come to my question:<\/p>\n<p>Is it possible to deactivate the thermal expansion coefficient for a further 5th load step, as I want to analyze several material effects and here I expect to see such effects without thermal shrinkage when cooling further down to -80&deg;C.<\/p>\n<p>This means I want to activate the thermal expansion coefficient for LS1-4 and deactivate this coefficient only for LS5 so that the seal is not further showing shrinkage when cooling.&rdquo;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-159303","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":[""],"_bbp_old_reply_author_name_id":["Anonymous"],"_bbp_old_is_reply_anonymous_id":["false"],"_btv_view_count":["1724"],"_bbp_likes_count":["0"],"_bbp_subscription":["255269"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["159303"],"_bbp_forum_id":["27791"],"_bbp_engagement":["50680","181152"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["181534"],"_bbp_last_active_id":["181534"],"_bbp_last_active_time":["2021-06-10 23:45:21"]},"test":"ahmed_5a"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/159303","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\/159303\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=159303"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}