Error message: ‘Mesh’ object has no attribute ‘geometric_dimension’

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,
1

Hello!

I am getting an error when trying to calculate the strain of a finite element displacement. The final error message is: ‘Mesh’ object has no attribute ‘geometric_dimension’.
I read others topics in this discourse group about the same issue, but I still could not solve it.
My code is as follows:

from dolfinx import fem, io, mesh, plot
import ufl

from mpi4py import MPI
# from petsc4py import PETSc

def eps(u):
   return ufl.sym(ufl.grad(u))

msh = mesh.create_rectangle(
   comm=MPI.COMM_WORLD,
   points=((0.0, 0.0), (2.0, 1.0)),
   n=(32, 16),
   cell_type=mesh.CellType.triangle,
)
element = ufl.VectorElement("Lagrange","triangle",2)
V = ufl.FunctionSpace(msh, element)

v = ufl.TestFunction(V)
print(eps(v)) # just to see if eps(v) is computed

Any suggestion is welcome.

2

You should use dolfinx.fem.FunctionSpace (dolfinx.fem.functionspace if you are on main branch), and not ufl.FunctionSpace when you are using the DOLFINx Python interface.