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Inside Back Cover: Study on Overdriven Detonation of Double‐Layer Shaped Charge (Prop., Explos., Pyrotech. 11/2019)
Author(s) -
Liu Yakun,
Yin Jianping,
Wang Zhijun
Publication year - 2019
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201981103
Subject(s) - detonation , mach number , explosive material , physics , mach wave , mechanics , french horn , charge (physics) , discontinuity (linguistics) , exponent , chemistry , acoustics , mathematics , mathematical analysis , linguistics , philosophy , organic chemistry , quantum mechanics
The inside back cover picture shows that due to the difference in chemical and physical properties of the two explosives, the detonation wave propagating in the Low detonation velocity explosive (LE) near the contact surface will gradually deviating from the C‐J condition. The propagation law of Mach wave in Double‐layer shaped charge (DLSC) and Ordinary shaped charge (OSC) is analyzed and compared by combining theoretical analysis with numerical simulation. The results show that in OSC, Mach wave attenuates to steady spherical wave with the increasing of propagation distance. In DLSC, the Mach wave propagates with convergent horn wave, the axis of the DLSC remains in the Overdriven detonation (ODD) state. The intensity of Mach wave in DLSC is related to detonation velocity D and polytropic exponent k . More details are discussed in the Full Paper by Yakun Liu, Jianping Yin, and Zhijun Wang on page 1410 ff.