Abstract

A three-dimensional constitutive model is proposed for anisotropic inelastic deformed continuous medium, and further adapted for unidirectionally fiber-reinforced composites. In the constitutive relation, the material anisotropic elastic, anisotropic yielding and anisotropic hardening behavior are considered. The model accommodates both compressible and incompressible deformation properties. With all six stress and strain components retained in the constitutive relation, the model can be applied to predict three-dimensional nonlinear deformation response of composites under different loadings.

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