Numerical simulation of the delay time of impact initiated projectile

Zhang Menghua; Wang Pengxin; Yu Yonggang; Ruan Wenjun; Wang Jian; Ning Huijun

doi:10.11883/1001-1455(2016)05-0728-06

Volume 36 Issue 5

Oct. 2018

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Zhang Menghua, Wang Pengxin, Yu Yonggang, Ruan Wenjun, Wang Jian, Ning Huijun. Numerical simulation of the delay time of impact initiated projectile[J]. Explosion And Shock Waves, 2016, 36(5): 728-733. doi: 10.11883/1001-1455(2016)05-0728-06

Citation:

Zhang Menghua, Wang Pengxin, Yu Yonggang, Ruan Wenjun, Wang Jian, Ning Huijun. Numerical simulation of the delay time of impact initiated projectile[J]. Explosion And Shock Waves, 2016, 36(5): 728-733. doi: 10.11883/1001-1455(2016)05-0728-06

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Numerical simulation of the delay time of impact initiated projectile

doi: 10.11883/1001-1455(2016)05-0728-06

1.
School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
Baicheng Ordnance Test Center of China, Baicheng 137001, Jilin, China
3.
School of civil Engineering, Henan University of Science and Technology, Luoyang 471023, Henan, China

Received Date: 2015-01-20
Rev Recd Date: 2015-05-11
Publish Date: 2016-09-25

Abstract

Abstract

In this work, we investigated the process of penetration and energy release of the impact initiated projectile was investigated using numerical simulation, verified the superiority of the coupling of smooth particle hydrodynamics (SPH) with finite element method (FEM) in impact initiation, and obtained pressure-time curves for the projectile's hot-point pressure growth in different operating conditions by analyzing its bullet core's different head shapes, diameters and materials. Our simulation results show that, for a given bullet core's diameter, the shorter the bullet head's spike length, the more reduced the initiation time for the explosives' hot-point growth; for a given bullet core's length, a reduced bullet core's diameter will lead to a reduced hot-point growth time; and bullet cores made from steel show greater advantage at delay initiation time over those made from tungsten alloy. The simulated effects of target penetration are fairly consistent with those from experimental results.
- mechanics of explosion,
- impact initiation,
- SPH,
- impact initiated projectile,
- coupling algorithm

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References(10)

References

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