Method Step

python/timestepping.py:45–56

(self, u: ngs.GridFunction, dt: Optional[float] = None,
             newton_args: Optional[dict] = None)

        return u

    def Step(self, u: ngs.GridFunction, dt: Optional[float] = None,
             newton_args: Optional[dict] = None):
        if dt is not None:
            self.dt.Set(dt)
        self.gfu_old.vec.data = u.vec
        lin_solver = self._lin_solver_cls(mat=self.bfmstar.mat,
                                         pre=self.c,
                                         **(self._lin_solver_args or {}))
        newton = ngs.nonlinearsolvers.NewtonSolver(a=self.bfmstar,
                                                   u=u,
                                                   solver=lin_solver)
        newton.Solve(**(newton_args or {}))

class Newmark:
    def __init__(self,