A study on structural response characteristics of projectile penetrating on granite target

HAN Minghai; LIU Chuang; LI Pengcheng; LIU Zihan; ZHANG Xianfeng

doi:10.11883/bzycj-2024-0145

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HAN Minghai, LIU Chuang, LI Pengcheng, LIU Zihan, ZHANG Xianfeng. A study on structural response characteristics of projectile penetrating on granite target[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2024-0145

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HAN Minghai, LIU Chuang, LI Pengcheng, LIU Zihan, ZHANG Xianfeng. A study on structural response characteristics of projectile penetrating on granite target[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2024-0145

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A study on structural response characteristics of projectile penetrating on granite target

doi: 10.11883/bzycj-2024-0145

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

Received Date: 2024-05-17
Rev Recd Date: 2024-06-21

Available Online: 2024-06-24

Abstract

Abstract

In order to explore the structural response characteristics of projectile obliquely penetrating granite target, based on a 30 mm ballistic gun platform, the tests of projectile obliquely penetrating granite target were carried out, and the damage parameters of projectile structure under non-normal penetration were obtained. On this basis, combined with the numerical simulation, the deformation and fracture mechanism of the projectile structure of the projectile obliquely penetrating the granite target are studied, and the influence of the initial conditions of penetration on the structural response of the projectile is analyzed. The results show that the projectile is prone to bending and fracture when it is not penetrating the granite target. The asymmetric force on the head and tail of the projectile is the main factor affecting the response characteristics of the projectile. The degree of deformation and failure of the projectile is determined by the peak value of the angular velocity difference between the head and tail of the projectile. As the yaw increases, the bending degree of the projectile increases linearly, and the projectile breaks when the yaw increases to 8°. With the increase of the impact angle, the bending degree of the projectile increases first, followed by decrease and then increase again. When the impact angle is 15°, the bending degree of the projectile is the smallest. When the impact angle reaches 30°, the projectile breaks. Compared with the impact angle, the yaw has a more significant effect on the response behavior of the projectile structure. When the yaw and impact angle are combined, the introduction of the impact angle will increase the critical fracture positive yaw of the projectile, and the negative yaw will weaken the ability of the projectile to resist bending deformation and fracture. When the impact velocity is greater than 1600 m/s, the impact velocity of the projectile becomes the main controlling factor for the different response behaviors of the projectile.
- projectile,
- penetration,
- rock target,
- structural response

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References

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