Non-linear behavior of polymeric resin matrix composites: modeling of laminae and laminates

摘要

This paper presents an analytical method to model the non-linear behavior of polymeric resin matrix composites. Complementary energy density is used to derive a stress-strain relation which is non-linear in uniaxial loadings in the longitudinal transverse directions and in shear. The laminae behaviors are modeled by an n-order terms equation, with n going from two to five according to the non-linearity behavior. This paper presents results for (mat/θ well-balanced woven fabric/mat] E-glass/polyester laminates with high matrix volume fraction and shows a good agreement with experimental data.