{"id":290002,"date":"2023-06-22T19:09:46","date_gmt":"2023-06-22T19:09:46","guid":{"rendered":"\/forum\/forums\/topic\/divergent-hourglassing-model-near-bolt-holes-using-cohesive-zone-material\/"},"modified":"2023-06-22T19:09:46","modified_gmt":"2023-06-22T19:09:46","slug":"divergent-hourglassing-model-near-bolt-holes-using-cohesive-zone-material","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/divergent-hourglassing-model-near-bolt-holes-using-cohesive-zone-material\/","title":{"rendered":"Divergent hourglassing model near bolt holes using Cohesive zone material"},"content":{"rendered":"

Hello Community,<\/p>\n

I encountered a divergence problem in modeling the cracks (Fig.1 marked in red) by defining CZM elements near bolt hole where the bolts are hidden in the figure. The  elements near the bolt holes are already linear (dropping the mid node) . The bolt were created one frictional contact together with the two seperate parts of the bolt hole material with the setting in Fig.2.<\/p>\n

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Fig. 1 <\/p>\n

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Fig.2<\/p>\n

The solution output said highly distorted elements occurred and two elements are turning inside out (Fig. 3)<\/p>\n

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Fig.3 <\/p>\n

Also the newton-raphson residuals are presented at this bolt hole. The violating elements are also displayed. (Fig. 4)<\/p>\n

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Fig.4<\/p>\n

Hopefully some experts can provide guidance on resolving this issue and helping me out!<\/p>\n

Thank you so much!<\/p>\n

Kind regards,<\/p>\n

 <\/p>\n","protected":false},"template":"","class_list":["post-290002","topic","type-topic","status-closed","hentry","topic-tag-ansysworkbench-ansys-staticstructural","topic-tag-cohesive-zone-modeling","topic-tag-highly-distorted-elements","topic-tag-hourglass"],"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