Spallation of targets subjected to vertical penetraion of explosively-formed projectiles

LI Rui; HUANG Zhengxiang; ZU Xudong; XIAO Qiangqiang; JIA Xin

doi:10.11883/bzycj-2017-0055

Volume 38 Issue 5

Jul. 2018

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Article Navigation > Explosion And Shock Waves > 2018 > 38(5): 1039-1044

LI Rui, HUANG Zhengxiang, ZU Xudong, XIAO Qiangqiang, JIA Xin. Spallation of targets subjected to vertical penetraion of explosively-formed projectiles[J]. Explosion And Shock Waves, 2018, 38(5): 1039-1044. doi: 10.11883/bzycj-2017-0055

Citation:

LI Rui, HUANG Zhengxiang, ZU Xudong, XIAO Qiangqiang, JIA Xin. Spallation of targets subjected to vertical penetraion of explosively-formed projectiles[J]. Explosion And Shock Waves, 2018, 38(5): 1039-1044. doi: 10.11883/bzycj-2017-0055

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Spallation of targets subjected to vertical penetraion of explosively-formed projectiles

doi: 10.11883/bzycj-2017-0055

School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China

Received Date: 2017-02-22
Rev Recd Date: 2017-06-07
Publish Date: 2018-09-25

Abstract

Abstract

In order to understand the spallation of a target subjected to the impact load of an explosively formed projectile (EFP), on the basis of wave mechanics and basic assumptions, a mechanical model was developed to describe the spallation of the finite-thickness target vertically penetrated by an EFP. By the developed model, the spallation process of the target plate was obtained, and its formula was derived. The result shows as following. When the impact velocity of the EFP is 1 800 m/s and the thickness of the target increases from 35 mm to 60 mm, the thickness of the falcate spallation zone at the back of the target increases and its length decreases. When the thickness of the target is 40 mm and the impact velocity increases from 1 600 m/s to 1 900 m/s, the thickness of the falcate spallation zone at the back of the target decreases and its length increases. Dynamic tests were carried out on the EFPs penetration into the rolled homogeneous armor targets with the thickness of 40 mm. The experimental result is in good agreement with the theoretical prediction.
- explosively-formed projectile,
- vertical penetraion,
- spallation,
- impact load

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References(12)

References

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