{"id":165473,"date":"2023-03-17T09:00:25","date_gmt":"2023-03-17T09:00:25","guid":{"rendered":"\/knowledge\/forums\/topic\/is-it-possible-to-simulate-a-negative-creep-strain\/"},"modified":"2023-07-31T12:31:20","modified_gmt":"2023-07-31T12:31:20","slug":"is-it-possible-to-simulate-a-negative-creep-strain","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/is-it-possible-to-simulate-a-negative-creep-strain\/","title":{"rendered":"Is it possible to simulate a negative creep strain?"},"content":{"rendered":"<p>Negative creep is not possible. We trap this in the material algorithms and limit the creep increment to be positive.    Negative swelling is possible.  The creep swelling can be a function of the material state such as stress and creep strain &#8211; just like the deviatoric creep.  In MAPDL we only have deviatoric creep behavior.   Our swelling is similar to thermal strain and it can&#8217;t be a function of the current material state such as stress and creep strain, but user could probably implement a user swelling model that was a function of the material state from the previous substep.<\/p>\n","protected":false},"template":"","class_list":["post-165473","topic","type-topic","status-publish","hentry","topic-tag-2019-r1","topic-tag-materials","topic-tag-mechanical-apdl","topic-tag-special-purpose","topic-tag-structural-mechanics"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_last_active_time":["3\/15\/2023 20:20"],"_bbp_forum_id":["27814"],"_bbp_author_ip":["23.56.168.180"],"_btv_view_count":["606"],"siebel_km_number":["2059025"],"product_version":["2019 R1"],"km_published_date":["2019-04-22T00:00:00.000Z"],"family":["Structural Mechanics"],"application_name":["Mechanical APDL"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/165473","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/165473\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=165473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}