Rigid elliptical cross-section ogive-nose projectiles penetration into concrete targets

Xiang-hui Dai, Ke-hui Wang, Ming-rui Li, Jian Duan, Bing-wen Qian, Gang Zhou
2020 Defence Technology  
Please cite this article as: Dai X-h, Wang K-h, Li M-r, Duan J, Qian B-w, Zhou G, Rigid elliptical cross-section ogive-nose projectiles penetration into concrete targets, Defence Technology, https:// Abstract 1 The elliptical cross-section ogive-nose projectile (ECOP) has recently attracted attention because it is 2 well suited to the flattened shape of earth-penetrating weapons. However, the penetration 3 performance of ECOPs has not been completely understood. The objective of this study was
more » ... of this study was to 4 investigate the penetration performance of ECOPs into concrete targets using a theoretical method. A 5 general geometric model of ECOPs was introduced, and closed-form penetration equations were 6 derived according to the dynamic cavity-expansion theory. The model was validated by comparing 7 the predicted penetration depths with test data, and the maximum deviation was 15.8%. The 8 increment in the penetration depth of the ECOP was evaluated using the proposed model, and the 9 effect of the major-minor axis ratio on the increment was examined. Additionally, the mechanism of 10 the penetration-depth increment was investigated with respect to the caliber radius head, axial stress, 11 and resistance. Rigid elliptical cross-section ogive-nose projectiles penetration into concrete targets The elliptical cross-section ogive-nose projectile (ECOP) has recently attracted attention because it is 3 well suited to the flattened shape of earth-penetrating weapons. However, the penetration 4 performance of ECOPs has not been completely understood. The objective of this study was to 5 investigate the penetration performance of ECOPs into concrete targets using a theoretical method. A 6 general geometric model of ECOPs was introduced, and closed-form penetration equations were 7 derived according to the dynamic cavity-expansion theory. The model was validated by comparing 8 the predicted penetration depths with test data, and the maximum deviation was 15.8%. The 9 increment in the penetration depth of the ECOP was evaluated using the proposed model, and the 10 effect of the major-minor axis ratio on the increment was examined. Additionally, the mechanism of 11 the penetration-depth increment was investigated with respect to the caliber radius head, axial stress, 12 and resistance. 13
doi:10.1016/j.dt.2020.05.011 fatcat:377blelyhbfsldh4opeeokj3la