Numerical simulation of anti-penetration performance of an N-shaped armor plate against armor-piercing projectiles

YANG Shu,YU Chen,KANG Yubiao,PEI Lianzheng,QI Chang,JING Yitong

Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (16) : 1-9.

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PDF(1849 KB)
Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (16) : 1-9.

Numerical simulation of anti-penetration performance of an N-shaped armor plate against armor-piercing projectiles

  • YANG Shu1,2,3,YU Chen1,3,KANG Yubiao1,PEI Lianzheng1,3,QI Chang1,3,JING Yitong1
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Abstract

Aiming at the ballistic protection requirements of military vehicles, an N-shaped structural armor consisting of a perforated plate, an inclined plate, and a substrate was proposed and its anti-penetration performance against a 7.62 mm armor-piercing projectile was analyzed through numerical simulations.Firstly, on the basis of validating the effectiveness of the numerical simulation method, the penetration process of the projectile to the N-shaped armor plate was simulated and its special anti-ballistic mechanism was analyzed.Secondly, the influence of the impact position on the ballistic resistance of the armor plate was studied.The results show that different impact positions will lead to different penetration paths and different residual speed of the armor-piercing projectile.Then, by comparing the deflection angle and the integrity of the projectile after penetrating the perforated plate with three types of bore configurations, it was found that the conical bore plate changes most the attitude of the projectile as well as destroys it.Finally, the ballistic limit of the conical bore N-shaped armor plate was obtained through multiple sets of simulations.The results show that the ballistic limit of the conical bore N-shaped armor plate was increased by 12.5% compared with that of the homogeneous steel plate of the same weight.

Key words

ballistic protection / armor plate / armor-piercing projectile / anti-penetration mechanism / impact point / ballistic limit

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YANG Shu,YU Chen,KANG Yubiao,PEI Lianzheng,QI Chang,JING Yitong. Numerical simulation of anti-penetration performance of an N-shaped armor plate against armor-piercing projectiles[J]. Journal of Vibration and Shock, 2021, 40(16): 1-9

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