Analysis of Kinetic Energy of Behind-armor Debris Generated during the Normal Penetration of EFP into Armor Steel

doi:10.3969/j.issn.1000-1093.2019.10.006

Abstract

Abstract: The normal penetration of explosively formed penetrator (EFP) into armor steel is test and simulated to obtain the origin and axial position of behind-armor debris (BAD) with bigger kinetic energy. The axial distribution of velocity and mass of BAD generated during the normal penetration of EFP into armor steel under the conditions of different thicknesses of target (30-70 mm) and different impact velocities of EFP (1 650-1 860 m/s) were analyzed by the simulation method. The results indicate that the velocities of BAD from target and EFP increase approximately linearly with its axial position, the slope of envelope line is also constant when the target thickness or impact velocity of EFP is constant, and the intercept of envelope lines is affected weakly by debris origin (generated by target or EFP); the heavy (>10 g) BADs from target are in the middle of BAD cloud or close to target, and the heavy (>10 g) BADs from EFP are far from target; and the BADs with bigger kinetic energy are generated by EFP and far from target. Key

Key words: explosivelyformedpenetrator, behind-armordebris, axialdistribution, kineticenergyanalysis

CLC Number:

XING Boyang, HOU Yunhui, LI Taihua, ZHANG Dongjiang, LIU Rongzhong, GUO Rui. Analysis of Kinetic Energy of Behind-armor Debris Generated during the Normal Penetration of EFP into Armor Steel[J]. Acta Armamentarii, 2019, 40(10): 2014-2021.

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第40卷
第10期2019 年10月兵工学报ACTA
ARMAMENTARIIVol.40No.10Oct.2019