Simulation of explosive simulant filled with high-velocity projectiles crushing onto rock

SUN Qiran; SUN Yuxin; LI Ruiyu; DENG Guoqiang; HU Jinsheng

doi:10.11883/bzycj-2017-0313

Volume 39 Issue 1

Oct. 2018

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SUN Qiran, SUN Yuxin, LI Ruiyu, DENG Guoqiang, HU Jinsheng. Simulation of explosive simulant filled with high-velocity projectiles crushing onto rock[J]. Explosion And Shock Waves, 2019, 39(1): 013303. doi: 10.11883/bzycj-2017-0313

Citation:

SUN Qiran, SUN Yuxin, LI Ruiyu, DENG Guoqiang, HU Jinsheng. Simulation of explosive simulant filled with high-velocity projectiles crushing onto rock[J]. Explosion And Shock Waves, 2019, 39(1): 013303. doi: 10.11883/bzycj-2017-0313

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Simulation of explosive simulant filled with high-velocity projectiles crushing onto rock

doi: 10.11883/bzycj-2017-0313

1.
National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
China Ship Development and Design Center, Wuhan 430064, Hubei, China
3.
No.4 Engineering Research Institute, General Staff Headquarters of PLA, Beijing 100850, China

Received Date: 2017-09-03
Rev Recd Date: 2017-12-11
Publish Date: 2019-01-25

Abstract

Abstract

Addressing the projectile crush during high-speed penetration, we designed projectiles with two different shell thicknesses and conducted experiment for penetrating high-strength rock target at 1 000 m/s. The experimental results showed that projectiles with different shell thicknesses were completely broken and failed to effectively penetrate the rock target while the rock target was only comminuted on the surface, and that the fragmentation of the projectile tip during high-speed penetration in rock target was different from that in the thin metal target. In addition, based on the experimental results, we established the simulation model of the projectile penetrating the rock target using Autodyn-3D. Combining the SPH method with the Mott distribution failure model, we performed the numerical simulation of the projectile's crush process and revealed the mechanism of the projectile's breaking. Furthermore, we examined the influence of the simulated charge and the small range of different high velocities on the projectile's crush. The experimental results and the proposed numerical method can serve as reference for further study of the projectile's structure during high velocity penetration.
- penetration limitation,
- high velocity,
- rock,
- projectile crush,
- Mott distribution

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References(19)

References

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