Akshay Maniyar
Ansys Employee

Hi MC cao,

I looked over the screenshots you had included. It appears to be experiencing element distortion. Could you verify the elements at which location are distorted and also check for Newton-Raphson residual plots? Is it at the contact face or the face where the pressure is applied? Please check the below video which discusses various solutions related to element distortion.

How to Handle Element Distortion Errors in Hyperelastic Materials — Lesson 3 - ANSYS Innovation Courses


Akshay Maniyar