Reply To: Unknown error occured during nonlinear analysis

[Aurojyoti Prusty]

Hello,

The large deformation problems tend to distort the element which leads to convergence issues and that might be the reason why it is showing the error. Does the model involve alluminium with any type of rubber? You can try with hex elements if the geometry is not too complicated and go for tet element for little complex geometry parts. You can refer the below video to know how to handle Element Distortion Errors in Hyperelastic Material.

https://www.youtube.com/watch?v=fI2a_xP0veI&t=33s

Similar discussion below on why NLAD does not resolve issue if it involves plasticity.

Q. Why does nonlinear adaptive remeshing (NLAD) not resolve a metal plasticity application failing to convergence with element distortion error? - Ansys Knowledge

Please let us know.

Thanks,

Aurojyoti