Power characteristics of drum-shaped warheads under multi-point detonations

被引：0
|
作者：
Li H. [1 ]
Feng Y. [1 ]
Li Y. [1 ,2 ]
Suo T. [1 ,2 ]
机构：
[1] School of Aeronautics, Northwestern Polytechnical University, Shaanxi, Xi’an
[2] Institute of Extreme Mechanics, Northwestern Polytechnical University, Shaanxi, Xi’an
来源：
Baozha Yu Chongji/Explosion and Shock Waves | 2024年 / 44卷 / 03期
关键词：
damage area; drum-shaped warhead; fragment; multi-point initiation; power characteristics;
D O I：
10.11883/bzycj-2023-0317
中图分类号：
学科分类号：
摘要：
To adjust the fragment lethality field of the anti-ground ammunition, the paper studies the power characteristics of a drum-shaped warhead under static and dynamic detonation. Aiming at the ground armored vehicles, the damage efficiency of the drum-shaped warhead under different initiation modes is analyzed. The fragment power characteristics of a drum-shaped warhead under static detonation and the damage area to vehicle target under dynamic detonation are studied by numerical simulation under two initiation modes of end face center single point and center single point compared with cylindrical warhead of the same caliber. On this basis, further by adjusting the drum-shaped warhead initiation mode into three kinds of eccentric two-line synchronous initiation, eccentric two-line sequential initiation and eccentric two-line synchronous-sequential initiation. The fragment velocity and dispersion angle of the drum-shaped warhead during static detonation, the damage area to the vehicle target and the distribution of the effective fragment landing kinetic energy during dynamic detonation are calculated under different eccentric initiation. The effect of adjusting the detonating mode on the destruction power field of the fragment of the drum-shaped warhead is analyzed by comparing the power characteristics of the fragment of the drum-shaped warhead during the static detonation and the damage results of the vehicle target during dynamic detonation with the corresponding results under the end face center single-point initiation of the drum-shaped warhead. The results show that compared with the cylindrical warhead structure with the same caliber, the fragment dispersion angle of the drum-shaped warhead is increased by 55.98%, and the damaged area of the ground military vehicles is increased by the maximum 59.3%. Compared with the eccentric two-line synchronous initiation, the drum-shaped warhead with eccentric two lines synchronous-sequential initiation can increase the fragment dispersion angle by 18.0%, and increase the dispersion of fragments by 11.48%. Compared with the single-point initiation of charge center, the damage area of the drum-shaped warhead under eccentric two-line sequential initiation is less affected by the burst height, and the damage area reaches 47.15 m2 when the falling angle is 50°, the falling velocity is 200 m/s and the burst height is 9 m. By adjusting the structure and the initiation mode of the warhead, the dispersion angle of fragments can be effectively increased, the coverage area of fragments to the target can be increased, and the damage efficiency of the warhead can be improved. © 2024 Explosion and Shock Waves. All rights reserved.
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