Model experiments on penetration of layered geological material targets by hypervelocity rob projectiles

CHENG Yihao; DENG Guoqiang; LI Gan; SONG Chunming; QIU Yanyu; ZHANG Zhongwei; WANG Derong; WANG Mingyang

doi:10.11883/bzycj-2018-0230

Volume 39 Issue 7

Jul. 2019

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Article Navigation > Explosion And Shock Waves > 2019 > 39(7): 073301

CHENG Yihao, DENG Guoqiang, LI Gan, SONG Chunming, QIU Yanyu, ZHANG Zhongwei, WANG Derong, WANG Mingyang. Model experiments on penetration of layered geological material targets by hypervelocity rob projectiles[J]. Explosion And Shock Waves, 2019, 39(7): 073301. doi: 10.11883/bzycj-2018-0230

Citation:

CHENG Yihao, DENG Guoqiang, LI Gan, SONG Chunming, QIU Yanyu, ZHANG Zhongwei, WANG Derong, WANG Mingyang. Model experiments on penetration of layered geological material targets by hypervelocity rob projectiles[J]. Explosion And Shock Waves, 2019, 39(7): 073301. doi: 10.11883/bzycj-2018-0230

Citation:

CHENG Yihao, DENG Guoqiang, LI Gan, SONG Chunming, QIU Yanyu, ZHANG Zhongwei, WANG Derong, WANG Mingyang. Model experiments on penetration of layered geological material targets by hypervelocity rob projectiles[J]. Explosion And Shock Waves, 2019, 39(7): 073301. doi: 10.11883/bzycj-2018-0230

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Model experiments on penetration of layered geological material targets by hypervelocity rob projectiles

doi: 10.11883/bzycj-2018-0230

1.
State Key Laboratory of Disaster Prevention and Mitigation of Explosive and Impact, Army Engineering University of PLA, Nanjing 210007, Jiangsu, China
2.
National Defence Research Institute, Military Academy of Sciences, Beijing 100850, China
3.
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China

Available Online: 2019-06-25
Publish Date: 2019-07-01

Abstract

Abstract

Model experiments of hypervelocity penetration of steel rods at about Mach 10 into four types of layered geological material targets were conducted with a two-stage light gas gun, and the effects of the mortar position and the air-layer set on penetration were emphasized. The results show that, under certain conditions, both adding an air layer between the shielding layer and the lower structure layer and setting a mortar layer at the upper surface of the whole structure can promote the projectiles broken, decrease the penetration depth into the structural layer, but in the mean time intensify the cratering effect of the shielding layer. For reducing the penetration depth of the structural layer, the soft-hard-soft-hard layering set is feasible to optimize the anti-penetration performance against hypervelocity projectiles, in which the first soft layer is the surface layer made of porous materials with low sound impedance, the first hard layer is the shielding layer made of materials with high strength and hardness, and the second soft layer is the distribution layer and the second hard layer is the structural layer.
- hypervelocity penetration,
- model experiment,
- layered geological material targets,
- optimal configuration

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References(23)

References

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