{"id":44814,"date":"2020-06-06T19:25:38","date_gmt":"2020-06-06T19:25:38","guid":{"rendered":"\/forum\/forums\/topic\/contact-between-steel-and-concrete-in-a-circular-concrete-filled-steel-tube\/"},"modified":"2020-06-06T19:25:38","modified_gmt":"2020-06-06T19:25:38","slug":"contact-between-steel-and-concrete-in-a-circular-concrete-filled-steel-tube","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/contact-between-steel-and-concrete-in-a-circular-concrete-filled-steel-tube\/","title":{"rendered":"Contact between steel and concrete in a circular concrete-filled steel tube"},"content":{"rendered":"<p>Hello, members.<\/p>\n<p><\/p>\n<p>I am modeling a circular concrete-filled steel tube. Based on other examples, I have been testing three approaches for contact between steel and concrete.<\/p>\n<p><\/p>\n<p>1) Same mesh in both faces, with coincident nodes, using&nbsp; the command &#8220;NUMMRG&#8221;;<\/p>\n<p><\/p>\n<p>2) Same mesh in both faces, with coincident nodes, using the command &#8220;CPINTF&#8221;, defining coupled degrees of freedom in the interface;<\/p>\n<p><\/p>\n<p>3) Using TARGE170 for concrete and CONTA174 for steel tube, and&nbsp; the command &#8220;ESURF&#8221; for both;<\/p>\n<p><\/p>\n<p>However, I have been reading this <a title=\"topic\" href=\"\/thread\/obtaining-ultimate-load-in-ansys-workbench\/?order=all#comment-fabd0a18-0d16-491c-a819-a97d00ca5835\" target=\"_blank\" rel=\"noopener\">topic<\/a> that contains this sentence: &#8220;There is bonded contact between the faces that touch. Delete the bonded contact between the bodies, that is unnecessary&#8221;. Maybe, because I have been using Mechanical APDL I haven&#8217;t understood this.<\/p>\n<p><\/p>\n<p>So, I have these questions:<\/p>\n<p><\/p>\n<p>4) Which is the best option to simulate this contact between steel and concrete when I haven&#8217;t coincident nodes?<\/p>\n<p><\/p>\n<p>5) On the other hand, which is the best option to simulate this contact between steel and concrete?<\/p>\n<p><\/p>\n<p>I wonder if any member may help me to solve this problem.<\/p>\n<p><\/p>\n<p>Regards.<\/p>\n<p><\/p>\n<p>&nbsp;<img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/2c50699c-4603-42cb-8f70-abc40160eba0\/1c30c201-bf35-4005-b5e8-abd20144ffc8_sem-t&iacute;tulo.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-44814","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["16995"],"_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":["1"],"_btv_view_count":["1279"],"_bbp_subscription":["251733"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["44814"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","177582"],"_bbp_voice_count":["2"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["117218"],"_bbp_last_active_id":["117218"],"_bbp_last_active_time":["2020-06-09 20:20:35"]},"test":"andreyteston"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/44814","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\/44814\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=44814"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}