摘要
The damage mechanism and energy dissipation of the Polyethylene (PE) laminates in impacting was investigated. It was found that the dissipated energy of the impacting sphere bullet by the 1-mmthick PE plate firstly increased with the impacting velocity increasing from 50 to about 300 m/s, and then decreased with the impacting velocity increasing up to 600 m/s. According to the measured deformation and damage degree, a numerical simulation of the dissipated energy was made and obvious offset was found with the experimental results. The quasi-static properties of the PE fibers, decreasing with increase in tensile velocity, may be the main reason for the offset.
The damage mechanism and energy dissipation of the Polyethylene(PE) laminates in impacting was investigated. It was found that the dissipated energy of the impacting sphere bullet by the 1-mmthick PE plate firstly increased with the impacting velocity increasing from 50 to about 300 m/s, and then decreased with the impacting velocity increasing up to 600 m/s. According to the measured deformation and damage degree, a numerical simulation of the dissipated energy was made and obvious offset was found with the experimental results. The quasi-static properties of the PE fibers, decreasing with increase in tensile velocity, may be the main reason for the offset.
作者
SHU Zaiqin
ZHANG Jinyong
舒在勤;ZHANG Fan;WANG Weimin;FU Zhengyi;CHEN Wenjie;张金咏(State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Institute of Material Science and Engineering,Wuhan University of Technology,Wuhan430070,China;System Design Institute of Hubei Aerospace Technology Academy,Wuhan430040,China)
基金
Funded by National Natural Science Foundation of China(No.51502220)
