J Shanghai Jiaotong Univ Sci ›› 2021, Vol. 26 ›› Issue (2): 218-230.

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### Experiment and Simulation of Impact Response of Woven CFRP Laminates with Different Stacking Angles

ZHUANG Weimin (庄蔚敏), WANG Pengyue (王鹏跃), AO Wenhong (熬文宏), CHEN Gang (陈刚)

1. (1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China;
2. CRRC Changchun Railway Vehicles Co., Ltd., Changchun 130062, China)
• 出版日期:2021-04-28 发布日期:2021-03-24
• 通讯作者: WANG Pengyue (王鹏跃) E-mail:wangpy17@mails.jlu.edu.cn

### Experiment and Simulation of Impact Response of Woven CFRP Laminates with Different Stacking Angles

ZHUANG Weimin (庄蔚敏), WANG Pengyue (王鹏跃), AO Wenhong (熬文宏), CHEN Gang (陈刚)

1. (1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China;
2. CRRC Changchun Railway Vehicles Co., Ltd., Changchun 130062, China)
• Online:2021-04-28 Published:2021-03-24
• Contact: WANG Pengyue (王鹏跃) E-mail:wangpy17@mails.jlu.edu.cn

Abstract: The effects of different laying angles on impact resistance and damage types of woven carbon fibrereinforced polymer (CFRP) laminates were studied. The drop hammer impact test and simulation analysis of woven CFRP laminates at four different velocities were carried out by means of the combination of experiment and explicit finite element analysis. The effect of impact velocity on damage pattern and fracture of woven CFRP laminates with eight layers and four laying angles (0°, 15°, 30°, and 45°) was studied by drop weight impact test, and the damage area of woven CFRP laminates with different laying angles was measured by ultrasonic nondestructive testing method. A user-defined material model was developed based on LS-DYNA to simulate the impact behavior of woven CFRP laminates. A finite element simulation model was established to effectively predict the complex damage evolution of woven CFRP laminates under low-speed impact loading. Its effectiveness was verified by impact response and damage crack pattern. The energy absorption and impact force of the laminated plate increase gradually from 0° to 45° in the laying angle of woven fabric. With the increase of laying angle from 0° to 45°, the length of fracture crack and the damage area increase. The developed model can accurately predict the impact properties of the composites.