Progressive Failure Analysis of Laminated CFRP Composites under Three-Point Bending Load

In this paper, the mechanical behavior and damage evolution of CFRP laminates under three-point bending loads were investigated. Based on three-dimensional Hashin failure criterion cohesive zone method, a progressive analysis model was constructed to predict seven different modes, an improved stiffness matrix degradation law proposed. Numerical simulations performed using ABAQUS finite element software UMAT user subroutines verified by tests. The experimental results show that relative errors flexural strength modulus current simulation data ?3.10% ?2.70%, respectively, process after ultimate load accurately predicted. Meanwhile, predicted final modes consistent with micrographs failed specimens.