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July 15, 2024 at 6:16 pm
David Weed
Ansys Employee

Also note that we have a user routine for anisotropic hyperelasticity which comes with the ANSYS install media. The Fortran file is in the following path: C:\Program Files\ANSYS Inc\v242\ansys\customize\user

This routine is also documented in the MAPDL Programmer's Reference: 2.4.4. Subroutine UserHyperAniso (Writing Your Own Anisotropic Hyperelasticity Laws)