A study on injury effect of medium-caliber multi-environment bullets

LIU Kun; WANG Yifei; KANG Bao; LIU Yalei; SONG Jie; LI Zhongxin; WU Zhilin

doi:10.11883/bzycj-2024-0026

Volume 44 Issue 8

Aug. 2024

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LIU Kun, WANG Yifei, KANG Bao, LIU Yalei, SONG Jie, LI Zhongxin, WU Zhilin. A study on injury effect of medium-caliber multi-environment bullets[J]. Explosion And Shock Waves, 2024, 44(8): 081432. doi: 10.11883/bzycj-2024-0026

Citation:

LIU Kun, WANG Yifei, KANG Bao, LIU Yalei, SONG Jie, LI Zhongxin, WU Zhilin. A study on injury effect of medium-caliber multi-environment bullets[J]. Explosion And Shock Waves, 2024, 44(8): 081432. doi: 10.11883/bzycj-2024-0026

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A study on injury effect of medium-caliber multi-environment bullets

doi: 10.11883/bzycj-2024-0026

1.
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
China Wuzhou Engineering Design Group Co., Ltd., Beijing 100053, China
3.
Unit 63856 of People’s Liberation Army, Baicheng 137001, Jilin, China
4.
Chinese People’s Armed Police Force Coast Guard Academy, Ningbo 315801, Zhejiang, China

Received Date: 2024-01-11
Rev Recd Date: 2024-04-19

Available Online: 2024-04-26

Publish Date: 2024-08-05

Abstract

Abstract

To investigate the wound effectiveness of cross-medium bullets, gelatin is chosen as a simulated human target. The numerical simulation of the penetration process of the designed 7.62 mm multi-environment bullet into the simulated target is conducted using LS-DYNA software. The motion of the bullet and the changes in the target cavity are analyzed. By utilizing a three-degree-of-freedom rigid body motion model, the theoretical variations of bullet motion are obtained. In the same time, the penetration experiment was carried out by using multi-parameter synchronous measurement techniques. The results show that the numerical simulation agrees well with the experimental observations, effectively reproducing the penetration process and the wound effects of the multi-environment bullet. The theoretical model exhibits small errors compared to the experimental results but accurately predicts the motion characteristics of the bullet in the target. By employing a cavity structure, the stability of the bullet's motion across different media is improved. Compared to the traditional 56-type 7.62 mm rifle bullet, the designed bullet demonstrates longer stable flight time, greater distance, slower velocity decay, smaller deflection angle during tumbling phase, and comparable maximum cavity, permanent cavity, and energy transfer efficiency. It also exhibits a certain killing effect on the target. The research findings enrich the design theory of bullets and provide data support for the optimization design of new lightweight ammunition.
- multi-environment,
- bullet,
- injury effect,
- gelatin,
- cavity

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References(14)

References

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