{"id":287813,"date":"2023-06-08T20:33:07","date_gmt":"2023-06-08T20:33:07","guid":{"rendered":"\/forum\/forums\/topic\/contact-region-with-high-newton-raphson-residuals\/"},"modified":"2023-06-08T20:33:07","modified_gmt":"2023-06-08T20:33:07","slug":"contact-region-with-high-newton-raphson-residuals","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/contact-region-with-high-newton-raphson-residuals\/","title":{"rendered":"Contact region with high Newton raphson residuals"},"content":{"rendered":"

Hello,<\/p>\n

I am simulating a static strutural model using ANISO material. One of  the contact regions is for debonding cohesize zone model and I found out very high newton raphson residuals in there and the analysis was stopped. Also the highly distorted elements message popped up and i can see them in the last load step.<\/p>\n

Do I need to reduce the normal contact stiffness? I am confused that the normal contact stiffness is for closing the contact or openning the contact? Will that help if I change it to a smaller value? Any suggestion on an appropriate value?<\/p>\n

Or do I have to refine the mesh? I do think the mesh is fine already.<\/p>\n

Thank you for any explanation or discussion!<\/p>\n

\"\"<\/p>\n

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