Hello every body
i need constitutive law for an ortotrhtopic material for plane strain condition for 90 degree layups.
i derived it from 3D constitutive law equation from below formulation
S = [T2]^-1 [C] [T1]
which C are stiffness matrix, T2 and T1 are transformation matrix
i need this equation for stress-strain behaviour at thickness direction (x-z plane) but my results dosent agree with ansys sofwtware
could any body help me, plz?