Hello! I am trying to define UFL to use in the variational formulation. PM = FunctionSpace(mesh, ‘DG’, 0) TM = TensorFunctionSpace(mesh, ‘DG’, 0) u = Function(U) phi0 = Function(PM) k0 = Function™ def strain(u): return sym(grad(u)) def vol_strain(u): return tr(strain(u)) def perm_newton(v…

UFL - conditional for Tensor

Florian.g May 22, 2019, 7:09am 2

I had the same kind of problem.
See this post : Integer part of UFL tensor

Topic		Replies	Views
Defining a fem.Function using a conditional ufl statement General	4	263	February 27, 2024
Ufl error when defining variational formulations based on UserExpression variational formulation	3	2116	June 18, 2020
Reactive terms that depend on the value of the field variables and other condition variational formulation	4	910	April 20, 2021
Question on ufl.diff() variational formulation	2	780	February 7, 2020
Conditioning Finite-element solution to Non-negative values	5	1309	November 15, 2023