Experimental and theoretical study of symmetrical grooved-nose projectile penetrating into semi-infinite aluminum target

DENG Jiajie; ZHANG Xianfeng; LIU Chuang; WANG Wenjie; XU Chenyang

doi:10.11883/bzycj-2017-0413

Volume 38 Issue 6

Sep. 2018

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Article Navigation > Explosion And Shock Waves > 2018 > 38(6): 1231-1240

ZHANG Xian-feng, CHEN Hui-wu, ZHAO You-shou. Investigation of process and aftereffect of EFP penetration into target of finite thickness[J]. Explosion And Shock Waves, 2006, 26(4): 323-327. doi: 10.11883/1001-1455(2006)04-0323-05

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DENG Jiajie, ZHANG Xianfeng, LIU Chuang, WANG Wenjie, XU Chenyang. Experimental and theoretical study of symmetrical grooved-nose projectile penetrating into semi-infinite aluminum target[J]. Explosion And Shock Waves, 2018, 38(6): 1231-1240. doi: 10.11883/bzycj-2017-0413

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Experimental and theoretical study of symmetrical grooved-nose projectile penetrating into semi-infinite aluminum target

doi: 10.11883/bzycj-2017-0413

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

Received Date: 2017-11-17
Rev Recd Date: 2018-02-09
Publish Date: 2018-11-25

Abstract

Abstract

To achieve excellent penetration performance with high-quality utilization ratio, the symmetrical grooved-nose projectile is proposed between the ogive-nose projectile and conical-nose projectile.Aiming to provide insight into the penetration performance of symmetrical grooved-nose projectile, comparative penetration tests are conducted from moderate to low velocities.Based on the experimental study, the localized interaction model for symmetrical grooved-nose projectile penetrating into semi-infinite aluminum target is derived.Combined with the phenomenon of target damage, the normal stresses acting on the localized surface of the symmetrical grooved-nose are proposed and then the penetration depth of symmetrical grooved-nose projectile can be calculated.The results of experiment and theoretical model prove that the symmetrical grooved-nose projectile has a more excellent penetration performance than the ogive-nose projectile.The reasons of increasing penetration depth for symmetrical grooved-nose projectile are the increasement of specific kinetic energy of cross section of the projectile head and the target weakening effect during penetration, and the decisive factor is the target weakening effect.
- penetration mechanics,
- penetration depth,
- symmetrical grooved-nose projectile,
- wedge-embedded penetration regimen,
- localized interaction model

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References(26)

References

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