An analytic model of penetration for oval-nosed projectile penetrating into pre-drilled target

Deng Jiajie; Zhang Xianfeng; Qiao Zhijun; Guo Lei; He Yong; Chen Dongdong

doi:10.11883/1001-1455(2016)05-0625-08

Volume 36 Issue 5

Oct. 2018

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Deng Jiajie, Zhang Xianfeng, Qiao Zhijun, Guo Lei, He Yong, Chen Dongdong. An analytic model of penetration for oval-nosed projectile penetrating into pre-drilled target[J]. Explosion And Shock Waves, 2016, 36(5): 625-632. doi: 10.11883/1001-1455(2016)05-0625-08

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An analytic model of penetration for oval-nosed projectile penetrating into pre-drilled target

doi: 10.11883/1001-1455(2016)05-0625-08

1.
Ministerial Key Laboratory of ZNDY, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
The Unit 95856 of PLA, Nanjing 210000, Jiangsu, China

Received Date: 2015-02-04
Rev Recd Date: 2015-05-20
Publish Date: 2016-09-25

Abstract

Abstract

In this work, to investigate the penetration performance of a projectile into pre-drilled targets, we proposed and improved a penetration model of an oval-nosed projectile penetrating into the pre-drilled target using the conical pre-drilling assumption and coulomb friction model for analyzing the hole drilling/reaming versus the penetration depth and stabilization of the projectile. The analytic model was verified with tests of the projectile penetrating targets made from brittle and elastic-plastic targets. The results from our improved model are fairly consistent with those from the tests. In the case of a cylindrical hole, the impact velocity, CRH and the cavity/radius ratio are in direct proportion to the projectile's penetrating depth into a pre-drilled target. Withe same volume of the penetration, the angle of the conical hole and the relative has a great influence on the penetration depth, and the greater the angle, the weaker the degree to which CRH affects the penetration performance.
- mechanics of explosion,
- penetration,
- cavity expansion theory,
- pre-drilled target,
- tandem warhead

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References

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