Influencing factors of penetration performance of an elliptical cross-section projectile

LIU Junwei; ZHANG Xianfeng; LIU Chuang; WANG Jiamin; XIONG Wei; TAN Mengting; XIAO Chuan

doi:10.11883/bzycj-2023-0132

Volume 43 Issue 9

Sep. 2023

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LIU Junwei, ZHANG Xianfeng, LIU Chuang, WANG Jiamin, XIONG Wei, TAN Mengting, XIAO Chuan. Influencing factors of penetration performance of an elliptical cross-section projectile[J]. Explosion And Shock Waves, 2023, 43(9): 091409. doi: 10.11883/bzycj-2023-0132

Citation:

LIU Junwei, ZHANG Xianfeng, LIU Chuang, WANG Jiamin, XIONG Wei, TAN Mengting, XIAO Chuan. Influencing factors of penetration performance of an elliptical cross-section projectile[J]. Explosion And Shock Waves, 2023, 43(9): 091409. doi: 10.11883/bzycj-2023-0132

Citation:

LIU Junwei, ZHANG Xianfeng, LIU Chuang, WANG Jiamin, XIONG Wei, TAN Mengting, XIAO Chuan. Influencing factors of penetration performance of an elliptical cross-section projectile[J]. Explosion And Shock Waves, 2023, 43(9): 091409. doi: 10.11883/bzycj-2023-0132

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Influencing factors of penetration performance of an elliptical cross-section projectile

doi: 10.11883/bzycj-2023-0132

1.
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
China North Industries Corporation, Beijing 100053, China

Received Date: 2023-04-10
Accepted Date: 2023-07-04
Rev Recd Date: 2023-06-13

Available Online: 2023-07-12

Publish Date: 2023-09-11

Abstract

Abstract

In order to study the influence of the cross-section shape and caliber radius head on the penetration performance of elliptical cross-section projectiles, the static deep indentation test of the elliptical cross-section conical indenters was carried out, and the force-displacement curves of different cross-section indenter slowly penetrating the material were obtained. Then, by means of a 30-mm-caliber ballistic gun platform, a series of experiments were carried out on 2A12 thick aluminum targets subjected to normal penetration by three kinds of 30CrMnSi2A steel projectiles with different elliptical cross-section shapes in the striking velocity ranging from 400 m/s to 800 m/s. The penetration depth of projectiles and the failure morphology of targets were experimentally obtained. The penetration dynamic model of projectile into thick metal target was established on the basis of the cavity expansion theory and resistance function correction coefficient. The correctness of the theoretical model is validated by the experimental results in this paper, and the influence of the cross-section shape and caliber radius head of the projectile on the penetration performance are systematically analyzed. The results show that the elliptical section indenter with the same cross-sectional area has higher resistance while slowly penetrating into the material. When the major-to-minor axis length ratio of the cross-sectional of indenters increases from 1.00 to 2.00, the material resistance increases by 10.1%. It is found that there is a large difference in the failure morphology of the target under the penetration of circular and elliptical cross-section projectiles, and the shape of the target tunnel area is consistent with the shape of the projectile cross-section. In addition, when the cross-sectional area of the projectile is equivalent and the major-to-minor axis length ratio of each cross-section was constant, the penetration performance of projectile decreases with the increase of the larger the major-to-minor axis length ratio. The penetration performance of projectile with elliptical cross-section decreases with the increase of the major-to-minor axis length ratio and the decrease of the caliber radius head of the projectile.
- elliptical cross-section projectile,
- the major-to-minor axis length ratio,
- caliber radius head,
- penetration performance,
- deep indentation test

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