Water-jet-based Safe Decomposition Technology of Special-shaped Explosive

doi:10.3969/j.issn.1000-1093.2020.11.008

Abstract

Abstract: A design scheme for the safe decomposition of explosives based on water jet technology is proposed for the safe decomposition of large-size and special-shaped explosive components. A finite element numerical simulation model for the water jet cutting the explosive components is established according to the structural characteristics and material properties of the explosive components, and the cutting process and ultimate stress level of the explosive materials under different water jet velocity is analyzed. The water jet velocity is optimized to ensure that the explosive is not detonated by impact and the geometric structure is not completely destroyed. The decomposed explosive components keep their shapes intact and have no internal damage defects, which can provide effective samples for further analyzing the physical and chemical properties of the explosive components. Through the decomposing experiment of a hundred kilogram-level hollow cylindrical explosive with thickness of 75 mm, the optimized water jet velocity of 293 m/s was finally achieved. The experimental result shows that the explosive decomposition scheme is feasible. The designed decomposition device is highly versatile and can provide effective technical support for the safe decomposition of large-size and complex-structure explosive components.

Key words: explosivecomponent, waterjet, safedecomposition, numericalsimulation

CLC Number:

O358

WANG Jintao， YU Wenli， WANG Tao， HANG Guiyun， SHEN Huiming， ZHANG Cong. Water-jet-based Safe Decomposition Technology of Special-shaped Explosive[J]. Acta Armamentarii, 2020, 41(11): 2216-2224.

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