Hello,

My name is Radu Jubleanu, I am a PhD student at the Politehnica University of Bucharest. I work in the field of magnetic storage in superconductors. I want to carry out a numerical study of the mechanical stress in a modular cylindrical coil in Comsol. When I try to solve this magnetostructural problem in the Comsol Multiphysics software, this error appears:

"In Solid Mechanics:

The relative error (0.29) is greater than the relative tolerance.

There was a warning message from the linear solver.

Iterative refinement triggered.

Returned solution is not converged.

Not all parameter steps returned."

I am attaching the numerical model made.