errors

Hi,

I am in process of implementing the Bergstroem-Boyce Model. In a first
step I am just considering the hyperlastic part of it (Network A:
8-chain). I have implemented this part in a UMAT using a numerical
approach for the elasticity tensor (Forward Difference Approximation
with perturbation of F).

I have two problems:

1.
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In order to keep my UMAT as easy to read as possible I have tried to keep the FDA in a separate file using

call KFDA_Jaumann(dfgrd1,......)