Dear everyone,

Recently I want to simulate the hot forging process by abaqus. Since the defaulted friction model in abaqus is Coulomn friction which is not suitable for hot deformation, I want to code the shear friction model (friction shear stress = constant * shear strength). However, the shear strength of the material is a function of strain, strain rate and temperature. So how could I calculate or call the shear strength in FRIC subroutine (the variables that can be called by FRIC seems quite limited)? Can anyone provide some adivices or examples? Thanks so much for any help.