Characteristics of high-mass tungsten alloy kinetic projectile penetrating ultra-high strength steel targets at high velocity

FENG XiaoWei; LI Juncheng; LU Yonggang; WANG Shouqian; LU Zhengcao; LIU Chuang; FU Dan

doi:10.11883/bzycj-2023-0016

Volume 43 Issue 9

Sep. 2023

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Article Navigation > Explosion And Shock Waves > 2023 > 43(9): 091410

Wang Yu-Xin, Li Xiao-Jie, Wang Xiao-Hong, Yan Hong-hao, Sun Ming. Numerical simulation on interfacial wave formation in explosive welding using material point method[J]. Explosion And Shock Waves, 2014, 34(6): 716-722. doi: 10.11883/1001-1455(2014)06-0716-07

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FENG XiaoWei, LI Juncheng, LU Yonggang, WANG Shouqian, LU Zhengcao, LIU Chuang, FU Dan. Characteristics of high-mass tungsten alloy kinetic projectile penetrating ultra-high strength steel targets at high velocity[J]. Explosion And Shock Waves, 2023, 43(9): 091410. doi: 10.11883/bzycj-2023-0016

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Characteristics of high-mass tungsten alloy kinetic projectile penetrating ultra-high strength steel targets at high velocity

doi: 10.11883/bzycj-2023-0016

1.
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China
2.
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
3.
Project Management Center of PLA Rocket Force Equipment Department, Beijing 100085, China

Received Date: 2023-01-16
Rev Recd Date: 2023-05-21

Available Online: 2023-06-21

Publish Date: 2023-09-11

Abstract

Abstract

To study the penetration performance and failure characteristics of ultra-high strength steel targets against high-mass tungsten alloy kinetic projectiles with different impact velocities, a ballistic gun was used to carry out 215 g tungsten alloy kinetic projectiles to impact the ultra-high strength G50 steel and 45 steel targets at velocities in the range of 689−1489 m/s. According to the experimental results, a conic-like crater was observed in the ultra-high strength steel target against a tungsten alloy kinetic projectile, which was different from the column-like crater mode observed in the experiments of 45 steel targets. It was also observed that there were several unique tensile spall cracks on the crater surface and bottom for the ultra-high strength steel. The depth of penetration (DOP) and the crater volume of these two steel targets were further obtained, which showed that the DOP of G50 steel targets is shorter than that of 45 steel at similar penetration velocity, while the corresponding crater volume is greater than that of 45 steel. Based on the interaction mechanism between the projectile and target, the high-mass tungsten alloy kinetic projectiles are considered to undergo local fragmentation under high radial stress during penetration into the G50 steel target, resulting in unloading tensile waves within the target. It is believed the unloading waves within the target lead to the spalling damage of the crater wall, resulting in the fish-scale-like rough walls and spallation cracks. This also explains why the crater volume of G50 steel is greater than that of 45 steel. In addition, the sharpening effect was caused by the local fragmentation of the kinetic projectile head. Therefore, it is considered that this failure mode was mainly caused by both the tensile fracture of the target induced by the local fragmentation of the projectile and the sharpening behavior of the projectile. Numerical simulations of the penetration of high-mass tungsten alloy projectiles into ultra-high strength steel targets were further performed to demonstrate the entire process of deformation, damage, and failure of the target plate and projectile, which further validated the failure mechanism of the targets.
- ultra-high strength steel,
- high-mass tungsten alloy projectile,
- high velocity penetration,
- penetration characteristic

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References

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