Set limits to the solution function

dolfinx
1

Hello,
I’m working with FEniCSx with the dolfinx.fem.petsc.NonlinearProblem class in order to recover a displacement field from a hyperelasticity problem.

However, I was wondering if I could bound the solution, in order to control the solver and give physical meaning to the final result.
I found this topic linked to the subject, but I couldn’t find the set_bounds method in the NonLinearProblem class.

Thank you for your help.

2

The Nonlinear solver that is included in DOLFINx does not include SNES, which is what one would use to set bounds. See dolfinx/test_nonlinear_assembler.py at 8140591d980ba4e0705588999294e37704c96186 · FEniCS/dolfinx · GitHub
on how to use SNES in nonlinear problem and: Set bounds in a NonLinearProblem - #4 by nate

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