{"id":363132,"date":"2024-04-19T06:52:33","date_gmt":"2024-04-19T06:52:33","guid":{"rendered":"\/forum\/forums\/topic\/strange-contact-problem\/"},"modified":"2024-04-22T14:43:40","modified_gmt":"2024-04-22T14:43:40","slug":"strange-contact-problem","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/strange-contact-problem\/","title":{"rendered":"Strange Contact Problem"},"content":{"rendered":"

Hello,<\/p>\n

I have encountered a strange problem concerning contact. I am working on a seat attachment rig for a tram and I have been able to get positive results for a first version of the analysis. These are the pictures that document it:<\/p>\n

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After completion I realised the external loads were too high so I decreased them for about 10 % as well as the friction from 0,12 to 0,1. Then I realised I should add more realistic materials than the Structural steel (yield strength 250 MPa, bilinear isotropic hardening) and Stainless steel (yield strength 250 MPa, bilinear isotropic hardening). So I duplicated the materials and in all of them increased the yield strength (also added bilinear is. hardending).<\/p>\n

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After finishing the update it is clear that the results increased significantly (at some spots for more than 70 MPa). In case of load increase that would be realistic but in a load decrease? Is there a way how to interpret or, better, fix this problem? I haven´t touched anything else, so there is no difference in mesh of the part etc. Thanks for your help!<\/p>\n

Best regards,<\/p>\n

Tadeáš<\/p>\n

 <\/p>\n","protected":false},"template":"","class_list":["post-363132","topic","type-topic","status-closed","hentry","topic-tag-mechanicalworkbench-1","topic-tag-contact","topic-tag-inappropriate-results","topic-tag-modelling","topic-tag-result-validation","topic-tag-simulation"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t