Unified formula for fragment velocity of polygonal charges

IF 5.1 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Impact Engineering Pub Date : 2025-03-04 DOI:10.1016/j.ijimpeng.2025.105296

Yuan Guo , Yuan Li , Haokai Li , Tao Suo

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引用次数: 0

Abstract

Compared with traditional cylindrical charges, polygonal charges can achieve better fragment convergence effects. However, the lack of relevant fragment velocity calculation formulas restricts the optimization design and performance evaluation of polygonal charges. In this study, we construct a unified fragment velocity formula of polygonal charges for the first time. First, dimensional analysis was used to study the influencing factors of the fragment velocity of polygonal charges, and a preliminary calculation model was determined. Fragment dispersion range tests based on pulsed X-rays were conducted, and the unknown functions were determined using experimentally verified numerical simulations, completing the establishment of a unified fragment velocity model. Finally, the accuracy of the constructed theoretical formula was verified using publicly published test results and other numerical simulations. Related research can provide important guidance for the design, optimization, and application of polygonal charges.

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来源期刊

International Journal of Impact Engineering 工程技术-工程：机械

CiteScore

8.70

自引率

13.70%

发文量

241

审稿时长

52 days

期刊介绍： The International Journal of Impact Engineering, established in 1983 publishes original research findings related to the response of structures, components and materials subjected to impact, blast and high-rate loading. Areas relevant to the journal encompass the following general topics and those associated with them: -Behaviour and failure of structures and materials under impact and blast loading -Systems for protection and absorption of impact and blast loading -Terminal ballistics -Dynamic behaviour and failure of materials including plasticity and fracture -Stress waves -Structural crashworthiness -High-rate mechanical and forming processes -Impact, blast and high-rate loading/measurement techniques and their applications