Numerical analysis on hypervelocity penetration into layered protective structure

LIU Zheng; CHENG Yihao; QIU Yanyu; DENG Guoqiang; WANG Mingyang

doi:10.11883/bzycj-2017-0181

Volume 38 Issue 6

Sep. 2018

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Article Navigation > Explosion And Shock Waves > 2018 > 38(6): 1317-1324

LIU Zheng, CHENG Yihao, QIU Yanyu, DENG Guoqiang, WANG Mingyang. Numerical analysis on hypervelocity penetration into layered protective structure[J]. Explosion And Shock Waves, 2018, 38(6): 1317-1324. doi: 10.11883/bzycj-2017-0181

Citation:

LIU Zheng, CHENG Yihao, QIU Yanyu, DENG Guoqiang, WANG Mingyang. Numerical analysis on hypervelocity penetration into layered protective structure[J]. Explosion And Shock Waves, 2018, 38(6): 1317-1324. doi: 10.11883/bzycj-2017-0181

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Numerical analysis on hypervelocity penetration into layered protective structure

doi: 10.11883/bzycj-2017-0181

LIU Zheng¹,
CHENG Yihao¹,
QIU Yanyu^{1, 2},
DENG Guoqiang^{3
,
,},
WANG Mingyang^{1, 2}

1.
State Key Laboratory of Disaster Prevention and Mitigation of Explosive and Impact, Army Engineering University of PLA, Nanjing 210007, Jiangsu, China
2.
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
3.
No.4 Research Institute of Engineering Corps, Beijing 100850, China

Received Date: 2017-05-23
Rev Recd Date: 2017-09-08
Publish Date: 2018-11-25

Abstract

Abstract

In this study, based on SPH and using AUTODYN-2D, we analyzed the hyper velocity penetration of tungsten rod into four types of layered shielding structures consisting of granite shielding layer, air/sand distribution layer and concrete structure layer, and obtained the structures' damage and energy distribution, with the following results achieved:(1) Although raising the striking velocity increased the damage of the shielding layer and the distributing layer, the penetration depth into the structure layer decreased within a certain velocity range; (2) The ratio of the energy conducted to the structure layer generally decreased with increasing of the striking velocity, and this could be attributed to the transverse propagation of the impact energy within the shielding layer and distributing layer; (3) Under certain conditions, addition of an air layer could reduce the penetration depth into the structure layer, the ratio and absolute value of the energy conducted to the structure layer.
- hypervelocity penetration,
- layered protective structure,
- energy distribution,
- SPH

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References(20)

References

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