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Assessment of Penetration Performance and Optimum Design of a Bore‐Center Annular Shaped Charge
Author(s) -
Xu Wenlong,
Wang Cheng,
Yuan Jianming,
Zhang Zhifan,
Deng Tao
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.201900268
Subject(s) - penetration (warfare) , impact crater , shaped charge , conical surface , materials science , penetration depth , composite material , penetration test , wellbore , geotechnical engineering , optics , geology , engineering , chemistry , physics , organic chemistry , asphalt , operations research , astronomy , explosive material , petroleum engineering
Abstract To improve penetration performance of the classical conical shaped charge, a bore‐center annular shaped charge (BCASC) was designed and effects of key parameters on its formation and penetration into concrete targets were investigated numerically and experimentally. As a result, suitable parameters of the BCASC, which comprehensive consideration of penetration hole diameter and depth into concrete targets, were provided. Subsequently, tests of the optimized BCASC penetration into single‐layer and double‐layer concrete targets were performed. The results indicate that, for all the cases, the diameters of the rear crater are larger than that of the front ones. The influence of factors h (standoff distance) and f (the radial distance between the center of the inner and outer liner wall) on the diameters of the front crater, the penetrating tunnel, and the rear crater are greater than that of other factors. The diameters of the front crater and the penetrating tunnel decrease with the increase of factors h and f . The penetration depth of optimized BCASC into concrete exceeds 3.0 times of the charge diameter ( D ). Hole diameters of penetrating tunnels are larger than the charge diameter. For the single‐layer concrete target, the hole diameter of the penetrating tunnel is 2.26 D . And, for the double‐layer concrete target, the hole diameters of the first and second layers are 1.41 D and 1.33 D , respectively.