Nose-shape optimization and simulation of projectiles penetrating into concrete target based on local interaction theory

Deng Jiajie; Zhang Xianfeng; Ge Xiankun; Chen Dongdong; Guo Lei

doi:10.11883/1001-1455(2017)04-0611-10

Volume 37 Issue 4

May 2017

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Deng Jiajie, Zhang Xianfeng, Ge Xiankun, Chen Dongdong, Guo Lei. Nose-shape optimization and simulation of projectiles penetrating into concrete target based on local interaction theory[J]. Explosion And Shock Waves, 2017, 37(4): 611-620. doi: 10.11883/1001-1455(2017)04-0611-10

Citation:

Deng Jiajie, Zhang Xianfeng, Ge Xiankun, Chen Dongdong, Guo Lei. Nose-shape optimization and simulation of projectiles penetrating into concrete target based on local interaction theory[J]. Explosion And Shock Waves, 2017, 37(4): 611-620. doi: 10.11883/1001-1455(2017)04-0611-10

Citation:

Deng Jiajie, Zhang Xianfeng, Ge Xiankun, Chen Dongdong, Guo Lei. Nose-shape optimization and simulation of projectiles penetrating into concrete target based on local interaction theory[J]. Explosion And Shock Waves, 2017, 37(4): 611-620. doi: 10.11883/1001-1455(2017)04-0611-10

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Nose-shape optimization and simulation of projectiles penetrating into concrete target based on local interaction theory

doi: 10.11883/1001-1455(2017)04-0611-10

1.
Ministerial Key Laboratory of ZNDY, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
State Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, PLA University of Science and Technology, Nanjing 210007, Jiangsu, China
3.
The Unit 95856 of PLA, Nanjing 210000, Jiangsu, China

Received Date: 2015-12-04
Rev Recd Date: 2016-03-14
Publish Date: 2017-07-25

Abstract

Abstract

Based on the local interaction theory, we proposed a penetration depth model for projectiles with an arbitrary nose-shape penetrating into a concrete target in consideration of the cratering stage related to nose-shape and normalized nose-shape function. Furthermore, using the method of maximum depth of penetration, we presented an expression about the normalized control parameter of the nose-shape and the classical variational optimization of the nose-shape. The local interaction model prediction and simulation results accord well with the experimental data of different projectile nose shapes. The optimal analysis and simulation show that, when the relative radius of the projectile nose is small, the optimal spherical-tip projectile is similar to corresponding optimal sharp-tip projectile, and the optimized truncated-tip projectiles have better penetration performance than that of the corresponding sharp-tip projectile. Compared with other nose-shaped projectiles, the optimized truncated-conical projectile has a relatively greater penetration depth. As the shape of the projectile nose affects its overload in the penetration process, the optimized shape of the projectile nose can effectively improve the penetration depth of the projectile.
- penetration projectile,
- concrete target,
- local interaction model,
- nose-shape optimization of projectile

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References(32)

References

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