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Find volume electrical resistance with LOCAL anisotropic resistivity

Find volume electrical resistance with LOCAL anisotropic resistivity

Find volume electrical resistance with LOCAL anisotropic resistivity

(OP)
Greetings,

I am currently trying to compute a volume electrical resistance. My volume geometry is relatively simple: a parallelepiped flanked by two trapezoids.

I would usually use ANSYS to solve this. I would fix a current at my volume edge and have the tension as a result. I would of course input the resistivity rho as a GLOBAL material properties.

My problem is that my resistivity is not global but is changing element by element. Moreover, it is not a scalar but a tensor.
For each node, I have a resistivity tensor.


Apparently, it seems impossible to input a local resistivity tensor (with diagonal terms) in ANSYS.

My input data are organized as such:

nodal coordinates | rho_xx | rho_yy | rho_zz | rho_xy | rho_yz | rho_xz



Does someone have any idea how to solve this problem?

Some of my colleagues are using COMSOL. Can it be done with COMSOL? I have heard that one can input their own equations.

 

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