Hypersizer calculated EL allowables under the temporary laminates and selected faiture thoery, The Aij membrane stiffnesses of these temporary laminates are converted to effective laminate engineering elasticity values Ex, Ey, and Gxy. these engineering contants are approximation? Because different ply sequencing is also affect the rusult of Allowables.
When the DL is generated, the allowables should be exact for this only DL.
i dont know whether my understand is right.