Study on Radial Distribution of Fragments Velocity of D-shaped Fragmentation Warhead

W. L. Liu, J. W. Jiang, M. Li, G. Yin, X. Sun

科研成果: 期刊稿件会议文章同行评审

摘要

For the asymmetric D-shaped fragmentation warhead with high charging coefficient and space efficiency, we simulate the driving process of fragments under typical eccentric initiation by using the fluid-structure interaction algorithm, and obtained the change rule of the fragment velocity radial distribution with the central angel, the thickness and material of the upper end cap. The results of numerical simulation show that the fragment velocity of D-shaped warhead increases gradually from the reverse to the forward direction, the velocity of fragment in forward direction increases by about 10% under single-point eccentric initiation compared with the cylindrical casing under center initiation, and the fragment velocity under double-point eccentric initiations is higher than single-point eccentric initiation; The initial velocity of the fragment has a positive correlation with the thickness and density parameters of the upper end cap; the mass of the warhead and the total kinetic energy of the fragments in the forward area increase with the increase of the central angle, but their ratio increases first and then decreases with the increase of the central angle. The results can be applied to structural optimization design and power evaluation of the warhead.

源语言英语
文章编号072058
期刊Journal of Physics: Conference Series
2478
7
DOI
出版状态已出版 - 2023
活动3rd International Conference on Defence Technology, ICDT 2022 - Changsha, 中国
期限: 22 8月 202226 8月 2022

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