Convergence of Solver with Hyperelasticity - Problems

Hello,

I've modeled a cantilever beam composed of Magneto-Rheological Elastomers (MAE) that bends when subjected to a magnetic field. The MAE used in the model currently uses a linear elastic material when in reality it follows hyperelastic behavior. When I try to incorporate the Arruda-Boyce hyperelasticity model into the materials (with ball-park inputs), the model cannot converge. Is there anything we can do such as changing the boundary conditions or solver configurations to make the solver converge on a solution?

Thanks,
Rob