Hi all, I have a question about newton solver convergence problem. I am simulation a domain with two different material properties. The first part is soft material, and Young’s modulus E_s is 3MPa, the left is hard area, where E_h is 800MPa, when I run it in dolfinx, the algorithm doesn’t converge. …

You may want to try with a continuation method. Solve the nonlinear problem for (Eh = 80, Es = 3), and then use the converged solution for solving the nonlinear problem for (Eh = 85, Es = 3). Go on like this increasing Eh by 5 (or whatever number you may want to try) step by step until you get to (…

Newton solver convergence for differential materials Young's modulus E

dolfinx

nate November 14, 2023, 3:09pm 3

Additional to continuation, see Default absolute tolerance and relative tolerance - #4 by nate.

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Newton solver convergence for differential materials Young's modulus E

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