MATUSR, MAT4 in weakly-coupled solution

Hi everyone,

I am trying to run a weakly-coupled solution (thermal and structural) with a custom MATUSR subroutine.

If I define the properties using MAT1 and MAT4, it works perfectly fine (see the attached model brick_coupled_builtin.fem).

If I define the properties using MATUSR and MAT4, I receive the following error:

*** ERROR #  70 ***   Thermal loads exist, and all material thermal expansion coefficients are zero.

I did not see anywhere in the documentation whether MATUSR did or did not support extra material cards. Would you have any idea if that's possible?

Thanks,

Cédric

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