Progressive Failure Analysis of Composite Laminates Including Shear Nonlinearity

4th Annual International Workshop on Materials Science and Engineering

Wang, Gang^1 ; Huang, Tao^1 ; Purong, Jia^1

Department of Engineering Mechanics, Northwestern Polytechnical University, Xi'an

710129, China^1

关键词: Composite laminate;    Damage initiation;    Failure mechanism;    Numerical predictions;    Open hole tensions;    Progressive damage;    Progressive failure analysis;    Tensile behaviors;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/381/1/012093/pdf
DOI  :  10.1088/1757-899X/381/1/012093

来源: IOP

【 摘 要 】

A progressive damage model including the non-linear shear behavior was developed to investigate the failure mechanisms of composite laminates. The non-linear shear response of the T300/Cycom970 lamina was derived by cyclic loading-unloading tensile tests on [+45/-45]2S laminate coupons. The strain-based Hashin type failure criteria and ply discount method were employed to predict damage initiation and propagation. The model was implemented in commercial finite element software ABAQUS by a UMAT subroutine. The tensile behavior of open-hole tension specimen was predicted with this model. A reasonable good agreement was achieved between numerical predictions and experimental results.