{"id":45079,"date":"2020-06-13T19:09:09","date_gmt":"2020-06-13T19:09:09","guid":{"rendered":"\/forum\/forums\/topic\/material-model-to-input-the-stress-strain-relationship-for-concrete-with-a-negative-slope\/"},"modified":"2020-06-13T19:09:09","modified_gmt":"2020-06-13T19:09:09","slug":"material-model-to-input-the-stress-strain-relationship-for-concrete-with-a-negative-slope","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/material-model-to-input-the-stress-strain-relationship-for-concrete-with-a-negative-slope\/","title":{"rendered":"Material model to input the stress-strain relationship for concrete with a negative slope"},"content":{"rendered":"<p>Hello, members.<\/p>\n<p><\/p>\n<p>I would like to use this relationship for the concrete on the confinement effect.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/2c50699c-4603-42cb-8f70-abc40160eba0\/8601dfe9-e678-4677-9ddf-abd9013b9add_sem-t&iacute;tulo.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>I have already tried these models:&nbsp;<\/p>\n<p><\/p>\n<p>Multilinear Kinematic Hardening Constants (TB,KINH) and Multilinear Isotropic Hardening Constants (TB,MISO), however, in these models is not a possible constitutive relationship stress-strain with negative slopes.<\/p>\n<p><\/p>\n<p>Nonlinear Isotropic Hardening Constants (TB,NLISO), however, in the models is not possible to add the constitutive relationship stress-strain.<\/p>\n<p><\/p>\n<p>Actually, I have been tried Multilinear Elastic Constants (TB,MELAS), on the other hand, reading about this model, I have found in ANSYS help: &#8220;This behavior, unlike the other options, is conservative (path-independent). The plastic strain for this option should be interpretedas a &#8220;pseudo plastic strain&#8221; since it returns to zero when the material is unloaded&#8221;.<\/p>\n<p><\/p>\n<p>1. Does this mean that material behavior will be linear even that my analysis will be non-linear?<\/p>\n<p><\/p>\n<p>2. Is it possible to put my constitutive relationship stress-strain using Experimental Data (TB,EXPE)?<\/p>\n<p><\/p>\n<p>I would like to obtain help.<\/p>\n<p><\/p>\n<p>Regards.<\/p>\n","protected":false},"template":"","class_list":["post-45079","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["17260"],"_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":["1644"],"_bbp_subscription":["251733"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["45079"],"_bbp_forum_id":["27791"],"_bbp_engagement":["22","177582"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["118202"],"_bbp_last_active_id":["118202"],"_bbp_last_active_time":["2020-06-18 16:42:44"]},"test":"andreyteston"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/45079","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\/45079\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=45079"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}