Study on the Effect of Attack Angle on 12.7 mm Armor-piercing Incendiary Projectile Penetrating Ceramic Composite Plate

FENG Lihua,ZHANG Xingjin,TAN Xiaohui,JI Yangziyi

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Journal Of Ballistics ›› 2024, Vol. 36 ›› Issue (04期) : 39-47. DOI: 10.12115/j.issn.1004-499X(2024)04-005

Study on the Effect of Attack Angle on 12.7 mm Armor-piercing Incendiary Projectile Penetrating Ceramic Composite Plate

  • FENG Lihua1*,ZHANG Xingjin1,TAN Xiaohui1,JI Yangziyi2
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Abstract

The penetration test of 12.7 mm armor-piercing incendiary ammunition on a certain type of ceramic composite armor plate structure was carried out. The limit penetration velocity of the projectile to the composite armor plate and the damage pattern of the target plate was obtained. The finite element model of the projectile penetration of ceramic composite armor plate was established based on the smoothed particle hydrodynamics method in LS-DYNA. The finite element model was verified by comparing the maximum penetration velocity of the projectile,damage patterns and perforation size on the front side of the ceramic plate,deformation and damage on the back side of the composite target plate obtained from the experiment and numerical simulation. Then,the effect of the attack angle on the dynamic response of the projectile and the target plate in the penetration process was simulated and analyzed. The results show that,the penetration ability of the projectile to the ceramic composite armor plate is enhanced due to the decreasing of contact area between the head of projectile and target when the attack angle increasing from 0° to 6°. With the attack angle further increasing,the penetration ability of the projectile penetration ability decreases. It is resulted from the interaction the tail of projectile with the unbroken ceramic outside the central crushing area of the ceramic plate after the projectile penetrates the ceramic target plate due to the large deflection angle of the projectile. The interaction consumes part of its kinetic energy and leads to the decrease of its penetration ability. The energy absorbed by the ceramic is approximately 5 times that of the composite material layer,indicating that the attack angle mainly affects the energy absorption of the ceramic plate and consequently influences the penetration of the target plate.

Key words

ceramic composite armor plate / armor-piercing incendiary projectile / attack angle / penetration

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FENG Lihua,ZHANG Xingjin,TAN Xiaohui,JI Yangziyi. Study on the Effect of Attack Angle on 12.7 mm Armor-piercing Incendiary Projectile Penetrating Ceramic Composite Plate. Journal Of Ballistics. 2024, 36(04期): 39-47 https://doi.org/10.12115/j.issn.1004-499X(2024)04-005

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