{"id":51486,"date":"2021-01-21T10:41:07","date_gmt":"2021-01-21T10:41:07","guid":{"rendered":"\/forum\/forums\/topic\/concrete-drucker-prager-softening-material-model\/"},"modified":"2021-01-21T10:41:07","modified_gmt":"2021-01-21T10:41:07","slug":"concrete-drucker-prager-softening-material-model","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/concrete-drucker-prager-softening-material-model\/","title":{"rendered":"Concrete Drucker-Prager Softening Material Model"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Dear all,<\/p>\n<p>for my master thesis I simulate a Timber-Concrete-Composite Beam. Therefore, I should consider cracks in the tension zone of the concrete slab. First idea was to use a concrete Drucker-Prager softening material model (see picture 1).<\/p>\n<p>I used a patch-test to verify the material model. Unfortunatly, the stress-strain curves under compression and tension are not as I imagined (see picture 2). I attached self-drawn stress-strain curves to show you how they should look like (see picture 3).<\/p>\n<p>Furthermore, there are Solver-Pivot Warnings during the patch-tests, howerver, the calculation works. But for a simply supported beam the calculation doesn&#039;t converge. (I have already defined substeps.)<\/p>\n<p>Can someone help me please? Did I define the Drucker-Prager softening wrong?<\/p>\n<p>Thanks in advance!<\/p>\n<p>Lea<\/p>\n<div class=\"embedExternal embedImage\">\n<div class=\"embedExternal-content\">\n<a class=\"embedImage-link\" href=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/E6BWAFBZ199S\/screenshot-2021-01-21-093737.jpg\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" class=\"embedImage-img\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/E6BWAFBZ199S\/screenshot-2021-01-21-093737.jpg\" alt=\"Screenshot 2021-01-21 093737.jpg\" \/><br \/>\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-51486","topic","type-topic","status-closed","hentry","topic-tag-concrete-non-linear","topic-tag-convergence","topic-tag-drucker-prager","topic-tag-softening"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["23756"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":["?:\u0011?"],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["909"],"_bbp_subscription":["232134"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["51486"],"_bbp_forum_id":["27815"],"_bbp_engagement":["88","185302"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["139732"],"_bbp_last_active_id":["139732"],"_bbp_last_active_time":["2021-01-22 16:17:10"]},"test":"leab"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/51486","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\/51486\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=51486"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}