{"id":286999,"date":"2023-06-04T03:34:41","date_gmt":"2023-06-04T03:34:41","guid":{"rendered":"\/forum\/forums\/topic\/divergence-due-to-highly-distorted-element-with-cohesive-zone-model-crack\/"},"modified":"2023-06-04T03:34:41","modified_gmt":"2023-06-04T03:34:41","slug":"divergence-due-to-highly-distorted-element-with-cohesive-zone-model-crack","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/divergence-due-to-highly-distorted-element-with-cohesive-zone-model-crack\/","title":{"rendered":"Divergence due to Highly distorted element with Cohesive zone model crack"},"content":{"rendered":"

Hello,<\/p>\n

I am modeling the crack of ANISO material near the bolt hole based on cohesize zone model, so a bonded contact was created along the predefined crack line and assigned the energy based cohesive zone material. Now the model diverged at a load step.<\/p>\n

Since this bonded contact is intended to open based on CZM criterion, i can see the high Newton raphson residual force on the exposed contact surface inside one element. Also the elements were highly distorted at the last load step. The substeps were already 50 to apply a 2.5mm displacement and still diverged.<\/p>\n

Can anyone give an idea on how to resolve this issue? I am not sure how to change the settings of the bonded cantact defined as CZM given it is supposed to open up.<\/p>\n

Appreciate any discussions or help!<\/p>\n

Eason<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

 <\/p>\n","protected":false},"template":"","class_list":["post-286999","topic","type-topic","status-closed","hentry","topic-tag-cohesive-zone-modeling","topic-tag-fracture","topic-tag-highly-distorted-elements"],"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