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Calculation of Depth and Crater Diameter for the Supersonic Penetration of Shaped Charge Jet into Concrete
Author(s) -
Xiao QiangQiang,
Huang ZhengXiang,
Zhu ChuanSheng,
Zu XuDong
Publication year - 2013
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.201200065
Subject(s) - shaped charge , supersonic speed , penetration (warfare) , mechanics , materials science , impact crater , shock wave , bernoulli's principle , penetration depth , physics , explosive material , optics , thermodynamics , engineering , chemistry , organic chemistry , operations research , astronomy
Considering that the sound velocity of concrete is lower than that of metal, this study discusses the effect of stationary shocks and compression during the process of shaped charge jet penetration into concrete when the penetration velocity is greater than sound velocity. The linear relationship between shock velocity and particle velocity is used to describe concrete materials. The state parameters of concrete under shock loading are calculated using Rankine‐Hugoniot jump conditions. Moreover, a combination of these relations with the Bernoulli equation yields a supersonic penetration equation across the shock. A cavity growth equation based on the Szendrei‐Held equation is presented when supersonic penetration occurs. Predictions from the supersonic penetration model are in good agreement with the depth and cavity diameter of experimental results for shaped charge jet penetration into concrete for charge diameters of 60, 142, 200, and 400 mm.