{"id":29189,"date":"2018-04-29T16:55:18","date_gmt":"2018-04-29T16:55:18","guid":{"rendered":"\/forum\/forums\/topic\/convergence-problem-of-non-linear-contact-and-geometric-analyses\/"},"modified":"2018-04-29T16:55:18","modified_gmt":"2018-04-29T16:55:18","slug":"convergence-problem-of-non-linear-contact-and-geometric-analyses","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/convergence-problem-of-non-linear-contact-and-geometric-analyses\/","title":{"rendered":"convergence problem of non linear contact and geometric analyses?"},"content":{"rendered":"

Hello friends<\/p>\n

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                    suffering from convergence of forces problem.<\/p>\n

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1) Rigid body motion is not there as body is under compressive load.<\/p>\n

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2) Loading cycle:   40 load step with 50N at each step is applied but in standard paper the same body has 2000N (loading step not discuss)<\/p>\n

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3) Material instability: thats the question how to check it?<\/p>\n

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4) Element formulation error : this error is always there ?<\/p>\n

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Every time element get distorted error is there. <\/p>\n

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check element shape.<\/p>\n

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 <\/p>\n

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My question is this : In mesh metric after checking that: skewness is below .5 it is good.<\/p>\n

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But some element(1%) are having skewness 0.9 then what to do?<\/p>\n

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\"\"<\/p>\n

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after that element quality is checked<\/p>\n

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\"\"<\/p>\n

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Now explain me what to do other than decrease the element size?<\/p>\n

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how to generate mesh for skewness 1, element quality having value near 1.<\/p>\n

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\"\"<\/p>\n

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i Am using newton raphson residual to find out the place where its value is high and using sphere of influence.<\/p>\n

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thanks <\/p>\n

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Regards<\/p>\n

<\/p>\n

Deepak maurya<\/p>\n

<\/p>\n

              <\/p>\n","protected":false},"template":"","class_list":["post-29189","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["1356"],"_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","0","0","0","0"],"_btv_view_count":["601"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["29189"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","155001"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["58344"],"_bbp_last_active_id":["58344"],"_bbp_last_active_time":["2018-05-01 15:35:05"]},"test":"maurya"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/29189","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\/29189\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=29189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}