{"id":39028,"date":"2019-11-18T15:22:33","date_gmt":"2019-11-18T15:22:33","guid":{"rendered":"\/forum\/forums\/topic\/an-internal-solution-magnitude-limit-was-exceeded\/"},"modified":"2019-11-18T15:22:33","modified_gmt":"2019-11-18T15:22:33","slug":"an-internal-solution-magnitude-limit-was-exceeded","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/an-internal-solution-magnitude-limit-was-exceeded\/","title":{"rendered":"An internal solution magnitude limit was exceeded"},"content":{"rendered":"

Hi,<\/p>\n

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I am doing non-linear static simulation of a frame in ansys workbench. Since the frame is of uniform thickness i created mid surfaces and the screws are replaced with line elements to reduce the model run time.<\/p>\n

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In the model i have 4 M4 screws and 4 M3.2 screws, so i have defined bolt pre-tension of 3900N and 2500N respectively.<\/span><\/p>\n

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Line elements are connected to the edges of holes in the frame using bonded contacts. Between the two frame surfaces frictional contact was defined.<\/span><\/p>\n

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Here i have 2 load steps: first with screw pre-tension and second with a remote force of 15KN.<\/span><\/p>\n

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Boundary conditions are:  <\/span>The hole in the frame was fixed and a remote force of 15KN was applied on the  <\/span>edges shown.<\/span><\/p>\n

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During the pre-tension load step i encountered the following error. <\/span><\/p>\n

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I know that the reason for such errors are ill constrained model. But as per my knowledge the model is quite well constrained. On internet i found that if we constrain rotational degrees of freedom in z-direction for beams this error would go away. I did it but no luck.<\/span><\/span><\/p>\n

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I agree that such a high force of 15KN applied over a small surface is not acceptable, but atleast it should not show any error for pre-tension loads.<\/span><\/span><\/p>\n

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Thank you so much for your help.<\/span><\/span><\/p>\n","protected":false},"template":"","class_list":["post-39028","topic","type-topic","status-closed","hentry","topic-tag-static-structural"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["11207"],"_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":["21021"],"_bbp_subscription":["245005","267426","27447"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["39028"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","27447","154982","170641","182216","267426"],"_bbp_voice_count":["6"],"_bbp_reply_count":["25"],"_bbp_last_reply_id":["281088"],"_bbp_last_active_id":["281088"],"_bbp_last_active_time":["2023-04-25 10:38:12"]},"test":"syammaricherla"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/39028","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\/39028\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=39028"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}