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• W2990620706 abstract "Non-cylindrical casings filled with explosives have undergone rapid development in warhead design and explosion control. The fragment spatial distribution of prismatic casings is more complex than that of traditional cylindrical casings. In this study, numerical and experimental investigations into the fragment spatial distribution of a prismatic casing were conducted. A new numerical method, which adds the Lagrangian marker points to the Eulerian grid, was proposed to track the multi-material interfaces and material dynamic fractures. Physical quantity mappings between the Lagrangian marker points and Eulerian grid were achieved by their topological relationship. Thereafter, the fragment spatial distributions of the prismatic casing with different fragment sizes, fragment shapes, and casing geometries were obtained using the numerical method. Moreover, fragment spatial distribution experiments were conducted on the prismatic casing with different fragment sizes and shapes, and the experimental data were compared with the numerical results. The effects of the fragment and casing geometry on the fragment spatial distributions were determined by analyzing the numerical results and experimental data. Finally, a formula including the casing geometry parameters was fitted to predict the fragment spatial distribution of the prismatic casing under internal explosive loading. • A numerical method which add Lagrangian points to Eulerian grid was proposed to track material interfaces and fracture. • A prismatic casing differs from cylindrical casings was proposed, and its fragment spatial distribution was investigated. • The influence of fragment size, fragment shape, casing geometry parameters on fragment spatial distribution was explored. • Casing geometry parameters was found to be the main factor affecting fragment spatial distribution. • A formula considering casing geometry parameters was proposed to predict the fragment spatial distribution" @default.
• W2990620706 created "2019-12-05" @default.
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• W2990620706 date "2020-08-01" @default.
• W2990620706 modified "2023-10-04" @default.
• W2990620706 title "Fragment spatial distribution of prismatic casing under internal explosive loading" @default.
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• W2990620706 doi "https://doi.org/10.1016/j.dt.2019.11.006" @default.
• W2990620706 hasPublicationYear "2020" @default.
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