I am currently using the Implicit EM_EP Solver and the Implicit Mechanical solver.
The systems of equations are coupled through MAT_295 which uses transmembrane potential (in my case) as a switch to activate the active contraction module. As a result, I would assume that the mechanics solver would control the timestep. I looked through the articles on dynalook.com but none of them seem to mention anything about multigrid implementation of the electromechanical model (ie. solving the problem on two different meshes to avoid unnecessary computations on the mechanical side). I am asking if such approach is already implemented in LS-DYNA or whether such a method would need to be user-coded. Please let me know if you need any further clarification
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