GFRP层合板近缘和边缘低速冲击损伤数值模拟研究

兰州理工大学学报 ›› 2022, Vol. 48 ›› Issue (1): 30-38.

GFRP层合板近缘和边缘低速冲击损伤数值模拟研究

徐姚兴^1,2, 韦尧兵^*1, 刘俭辉¹

1.兰州理工大学机电工程学院, 甘肃兰州 730050;
2.商丘工学院机械工程学院, 河南商丘 476000

收稿日期:2020-10-16 出版日期:2022-02-28 发布日期:2022-03-09
通讯作者: 韦尧兵(1965-),男,甘肃靖远人,研究员,硕导.Email:ybwei0730@163.com
基金资助:
国家自然科学基金青年基金(51605212),甘肃省自然科学基金(NO.17JR5RA122)

Study on simulation of near- and on- edge low-velocity impact damage of GFRP laminates

XU Yao-xing^1,2, WEI Yao-bing¹, LIU Jian-hui¹

1. School of Mechanical and Electrical Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China;
2. School of Mechanical Engineering, Shangqiu Institute of Technology, Shangqiu 476000, China

Received:2020-10-16 Online:2022-02-28 Published:2022-03-09

摘要/Abstract

摘要： 近缘和边缘冲击对复合材料的剩余强度有较大的影响.基于应力描述的三维Hashin失效准则,结合改进Camanho退化方案,考虑冲击接触时间对试件冲击损伤,借助ABAQUS模拟玻璃纤维增强环氧树脂基复合材料(GFRP)层合板的近缘和边缘冲击损伤与演化,同时采用Cohesive单元模拟层间界面,通过改进的Vumat子程序模拟冲击过程.将模拟结果和实验结果进行对比分析,验证模型和改编子程序的正确性.结果表明:非线性折减的Vumat子程序与直接折减方案相比,整体上能够更有效地预测层合板近缘、边缘冲击损伤以及时间-接触力曲线等主要特征;近缘、边缘冲击的损伤特性与动态响应有较大差异.

关键词: 复合材料, 近缘冲击, 边缘冲击, 数值模拟, 渐进损伤

Abstract: The near-edge and on-edge impact have a great influence on the residual strength of the composite material. Based on the three-dimensional Hashin failure criterion with stress description, combined with the improved Camanho degradation scheme, considering the impact damage of the test piece by the impact contact time, with the aid of ABAQUS to simulate the near-and on-edge impact damage of the glass fiber reinforced epoxy resin matrix composite (GFRP) laminate. At the same time, the Cohesive element is adopted to simulate the interlayer interface, and the impact process is simulated through the improved Vumat subroutine. The simulation results and the test results are compared and analyzed to verify the correctness of the model and the adapted subroutine. The results show that the non-linear reduction Vumat subroutine can predict the main characteristics of the laminate the near-edge, the on-edge impact damage, and the time-contact force curve more effectively compared with the direct reduction scheme. The near-edge and on-edge impact damage characteristics are quite different from the dynamic response.

Key words: composite laminates, near-edge impact, on-edge impact, finite element analysis, progressive damage

中图分类号:

TB332

徐姚兴, 韦尧兵, 刘俭辉. GFRP层合板近缘和边缘低速冲击损伤数值模拟研究[J]. 兰州理工大学学报, 2022, 48(1): 30-38.

XU Yao-xing, WEI Yao-bing, LIU Jian-hui. Study on simulation of near- and on- edge low-velocity impact damage of GFRP laminates[J]. Journal of Lanzhou University of Technology, 2022, 48(1): 30-38.

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