In-plane shear properties and damage process of composites based on unit cell analytic model

Based on unit cell analytic model, a method to analyze in-plane shear properties and damage process of composites was developed from micro component of composites. In-plane shear responses were tested by V-notched beam method. Considering the nonlinear shear performance of the matrix, nonlinear shear model of matrix was established. The shear stiffness of matrix was degraded by nonlinear shear model. On this basis, ABAQUS/Explicit finite element method with unit cell analytic model was used to analyze damage evolution process and predict strength of V-notched beam. Numerical results show that the numerical results of the method in this paper are well fit with experimental results.