Hello everyone, For some further applications, I need to access to the assembled system at each Newton iteration of a nonlinear hyperelasticity problem. Therefore I build my own Newton Solver using petsc4py: def NewtonSolver(G, u, bcs, dG): tol = 1e-10 error = 1. it = 0 while error…

Custom Newton Solver problem with Dirichlet conditions

nate January 31, 2020, 3:42pm 4

Or use this with a PETScSNESSolver where you can get access to the underlying SNES (which I assume is what you want).

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