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.

Topic		Replies	Views
Newtonsolver does not converge - Hyperelasticity	5	1067	May 2, 2020
Solver cannot converge General	3	158	June 11, 2024
Newton Solver did not converge mathematics	1	1327	August 13, 2020
Error: Newton solver did not converge Errors	1	807	June 12, 2022
Newton solver converge initially, then diverge and blow up Legacy DOLFIN	8	564	January 15, 2024

Newton solver convergence for differential materials Young's modulus E

Related topics