Hello,

To determinate the material constants of Bergstrom Boyce Model, I must follow some steps,

Among these steps, i must determinate the equilibrium true stress (Te) and equilibrium True strain (epsilon_e) from the equilibrium curve in order to determinate the initial shear stress modulus in network A.

My question is : anyone explain me more what is these two paramerter???

How determinate these two parameter???

Thank you in advance