Visco hypoelasticity

Hi all,




I am implementing visco-hypoelasticity in my FEA code for my research as


given in the 4.8.6 ANSYS manual.




I have relaxation only in the shear modulus and not in the pressure. The


manual doesn't give the explicit expression for the shear elastic stress


term and the pressure stress term. I extrapolated the expressions from what


is given, and the code is not working properly. Can you please tell me if