• 论文 •

### 复合材料层板冰雹高速冲击损伤预测及失效分析

1. 江苏大学 机械工程学院, 镇江 212013
• 收稿日期:2020-11-15 发布日期:2022-04-27
• 通讯作者: 张超 E-mail:zhangchao@ujs.edu.cn
• 基金资助:
江苏省普通高校研究生科研创新计划（KYCX20-3076）；江苏省自然科学基金（BK20180855）；机械结构力学及控制国家重点实验室开放课题（MCMS-E-0219Y01）

### Damage prediction and failure mechanism of composite laminates under high-velocity hailstone impact

ZHANG Chao, FANG Xin, LIU Jianchun

1. School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
• Received:2020-11-15 Published:2022-04-27

Abstract: Aiming at the potential risk of hailstone impact on the safety of composite structures, a continuum damage mechanics based nonlinear finite element model was developed to study the mechanical behavior of carbon fiber composite laminates under high-velocity hailstone impact. The Lagrangian method and smoothed particle hydrodynamics (SPH) method were used together to model the impact of hailstone, and the equation of state of water was introduced to describe the flow characteristics of the hailstone after breaking. A rate-dependent constitutive model of unidirectional composite, as well as 3D Hashin failure criteria and material stiffness reduction rule, was applied to predict the in-plane damage in composite layers. Interface elements governed by bilinear cohesive model were employed to simulate the inter-laminar delamination phenomena induced by impact. A user material subroutine VUMAT was coded and implemented to obtain the numerical solution based on ABAQUS/Explicit solver. The transient process of composite laminates under hailstone impact was reproduced and the damage characteristics and failure mechanism were analyzed in detail. The effects of impact velocity and impact angle of hailstone on the impact properties of composite laminates are discussed, which provides proper reference for numerical investigation of hailstone impact problems in composite structures.