{"id":396588,"date":"2024-12-06T11:47:37","date_gmt":"2024-12-06T11:47:37","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/contact-problem-contact-detected-earlier\/"},"modified":"2024-12-06T11:47:37","modified_gmt":"2024-12-06T11:47:37","slug":"contact-problem-contact-detected-earlier","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/contact-problem-contact-detected-earlier\/","title":{"rendered":"Contact problem, contact detected earlier."},"content":{"rendered":"<p>&lt;p&gt;While solving a bending of non linear material between two dies in ANSYS mechanical APDL, the plate is bending before coming in contact with pressing die and the solution is not correct as follows. What might be the problem in here? I think the problem might be in defining the contact region.&lt;br&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/06-12-2024-1733484775-mceclip1.gif\" \/>&lt;br&gt;&lt;br&gt;The contact defined was bonded contact between plate and lower die where they are initially in contact, the frictional contact between lower die and plate where they weren&#8217;t initially in contact and the same standard contact between the upper die and plate. The APDL commands used to define contact is as follows:&lt;br&gt;MP,MU,3,0.2&nbsp;&lt;br&gt;MAT,3 &nbsp;&nbsp;&lt;br&gt;MP,EMIS,3,7.88860905221e-31&nbsp;&lt;br&gt;R,3&nbsp;&lt;br&gt;REAL,3 &nbsp;&lt;br&gt;ET,2,170&lt;br&gt;ET,3,175&lt;br&gt;KEYOPT,3,9,0&lt;br&gt;KEYOPT,3,10,0 &nbsp;&nbsp;&lt;br&gt;R,3,&lt;br&gt;RMORE, &nbsp;&lt;br&gt;RMORE,,0&lt;br&gt;RMORE,0&nbsp;&lt;br&gt;RMORE,,,,,,1.0 &nbsp;&lt;br&gt;! Generate the target surface &nbsp;&nbsp;&lt;br&gt;ASEL,S,,,14&nbsp;&lt;br&gt;ASEL,A,,,15&nbsp;&lt;br&gt;ASEL,A,,,16&nbsp;&lt;br&gt;CM,_TARGET,AREA&nbsp;&lt;br&gt;TYPE,2 &nbsp;&lt;br&gt;NSLA,S,1&lt;br&gt;ESLN,S,0&lt;br&gt;ESLL,U &nbsp;&lt;br&gt;ESEL,U,ENAME,,188,189 &nbsp;&nbsp;&lt;br&gt;NSLE,A,CT2 &nbsp;&lt;br&gt;ESURF &nbsp;&nbsp;&lt;br&gt;CMSEL,S,_ELEMCM&nbsp;&lt;br&gt;! Generate the contact surface &nbsp;&lt;br&gt;ASEL,S,,,20&nbsp;&lt;br&gt;CM,_CONTACT,AREA&lt;br&gt;TYPE,3 &nbsp;&lt;br&gt;NSLA,S,1&lt;br&gt;ESLN,S,0&lt;br&gt;NSLE,A,CT2 ! CZMESH patch (fsk qt-40109 8\/2008)&nbsp;&lt;br&gt;ESURF&lt;br&gt;allsel,all&lt;br&gt;MP,MU,3,0.2&nbsp;&lt;br&gt;MAT,3 &nbsp;&nbsp;&lt;br&gt;R,4&nbsp;&lt;br&gt;REAL,4 &nbsp;&lt;br&gt;ET,4,170&lt;br&gt;ET,5,175&lt;br&gt;KEYOPT,5,9,0&lt;br&gt;KEYOPT,5,10,0 &nbsp;&nbsp;&lt;br&gt;R,4,&lt;br&gt;RMORE, &nbsp;&lt;br&gt;RMORE,,0&lt;br&gt;RMORE,0&nbsp;&lt;br&gt;! Generate the target surface &nbsp;&nbsp;&lt;br&gt;ASEL,S,,,5 &nbsp;&lt;br&gt;ASEL,A,,,7 &nbsp;&lt;br&gt;CM,_TARGET,AREA&nbsp;&lt;br&gt;TYPE,4 &nbsp;&lt;br&gt;NSLA,S,1&lt;br&gt;ESLN,S,0&lt;br&gt;ESLL,U &nbsp;&lt;br&gt;ESEL,U,ENAME,,188,189 &nbsp;&nbsp;&lt;br&gt;NSLE,A,CT2 &nbsp;&lt;br&gt;ESURF &nbsp;&nbsp;&lt;br&gt;CMSEL,S,_ELEMCM&nbsp;&lt;br&gt;! Generate the contact surface &nbsp;&lt;br&gt;ASEL,S,,,19&nbsp;&lt;br&gt;CM,_CONTACT,AREA&lt;br&gt;TYPE,5 &nbsp;&lt;br&gt;NSLA,S,1&lt;br&gt;ESLN,S,0&lt;br&gt;NSLE,A,CT2 ! CZMESH patch (fsk qt-40109 8\/2008)&nbsp;&lt;br&gt;ESURF&lt;br&gt;allsel,all&lt;br&gt;MP,MU,4,0.2&nbsp;&lt;br&gt;MAT,4 &nbsp;&nbsp;&lt;br&gt;MP,EMIS,4,7.88860905221e-31&nbsp;&lt;br&gt;R,5&nbsp;&lt;br&gt;REAL,5 &nbsp;&lt;br&gt;ET,6,170&lt;br&gt;ET,7,175&lt;br&gt;R,5,,,1.0,0.1,0,&lt;br&gt;RMORE,,,1.0E20,0.0,1.0,&nbsp;&lt;br&gt;RMORE,0.0,0,1.0,,1.0,0.5&lt;br&gt;RMORE,0,1.0,1.0,0.0,,1.0&lt;br&gt;RMORE,10.0,,,,,1.0 &nbsp;&lt;br&gt;KEYOPT,7,4,0&lt;br&gt;KEYOPT,7,5,0&lt;br&gt;KEYOPT,7,7,0&lt;br&gt;KEYOPT,7,8,0&lt;br&gt;KEYOPT,7,9,0&lt;br&gt;KEYOPT,7,10,0 &nbsp;&nbsp;&lt;br&gt;KEYOPT,7,11,0 &nbsp;&nbsp;&lt;br&gt;KEYOPT,7,12,3 &nbsp;&nbsp;&lt;br&gt;KEYOPT,7,14,0 &nbsp;&nbsp;&lt;br&gt;KEYOPT,7,18,0 &nbsp;&nbsp;&lt;br&gt;KEYOPT,7,2,0&lt;br&gt;KEYOPT,6,5,0&lt;br&gt;! Generate the target surface &nbsp;&nbsp;&lt;br&gt;ASEL,S,,,6 &nbsp;&lt;br&gt;CM,_TARGET,AREA&nbsp;&lt;br&gt;TYPE,6 &nbsp;&lt;br&gt;NSLA,S,1&lt;br&gt;ESLN,S,0&lt;br&gt;ESLL,U &nbsp;&lt;br&gt;ESEL,U,ENAME,,188,189 &nbsp;&nbsp;&lt;br&gt;NSLE,A,CT2 &nbsp;&lt;br&gt;ESURF &nbsp;&nbsp;&lt;br&gt;CMSEL,S,_ELEMCM&nbsp;&lt;br&gt;! Generate the contact surface &nbsp;&lt;br&gt;ASEL,S,,,19&nbsp;&lt;br&gt;CM,_CONTACT,AREA&lt;br&gt;TYPE,7 &nbsp;&lt;br&gt;NSLA,S,1&lt;br&gt;ESLN,S,0&lt;br&gt;NSLE,A,CT2 ! CZMESH patch (fsk qt-40109 8\/2008)&nbsp;&lt;br&gt;ESURF&lt;br&gt;&lt;br&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/06-12-2024-1733485353-mceclip2.png\" width=\"691\" height=\"239\" \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/06-12-2024-1733485353-mceclip3.png\" width=\"607\" height=\"238\" \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/06-12-2024-1733485353-mceclip4.png\" width=\"759\" height=\"297\" \/><img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/06-12-2024-1733485353-mceclip5.png\" \/>&lt;br&gt;The contact between area 6 and 19 is bonded type.&lt;br&gt;The contact between area 5,7 and 19 is standard type.&lt;br&gt;The contact between area 14,15,16 and 20 is standard type.&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-396588","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27791"],"_bbp_topic_id":["396588"],"_bbp_subscription":["490103","58821","240"],"_bbp_author_ip":["202.51.89.62"],"_bbp_last_reply_id":["396760"],"_bbp_last_active_id":["396760"],"_bbp_last_active_time":["2024-12-09 10:47:25"],"_bbp_reply_count":["4"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["3"],"_bbp_engagement":["490103","58821","240"],"_btv_view_count":["237"],"_bbp_topic_status":["unanswered"],"_edit_lock":["1733486385:490103"]},"test":"saroj-bellbase99gmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/396588","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\/396588\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=396588"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}