Novel micromechanics-based woven-fabric composite constitutive model with material nonlinear behavior

An averaging procedure is presented for analysis of plain-weave-fabric comp osites with material nonlinear behavior. A representative volume cell is as sumed. The cell is divided into many subcells, and averaging is performed a gain. The effective stress-strain relations of the subcell are obtained. Us ing iso-stress and iso-strain assumptions, the constitutive equations are a veraged along the thickness direction. As a result, a linear system of equa tions is formed and subsequently solved to distribute the global average st rains to each subcell. In this manner, given the average strains, the globa l average stresses can be determined. Numerical results are generated for p lain-weave composite with material nonlinear behavior.