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Analysis of the mass of behind-armor debris generated by RHA subjected to normal penetration of variable cross-section EFP

Authors :
Boyang Xing
Dongjiang Zhang
Zhenyan Guo
Yunhui Hou
Rui Guo
Rongzhong Liu
Liang Chen
Hao Zhou
Yongliang Yang
Jianhua Luo
Source :
Defence Technology, Vol 15, Iss 3, Pp 390-397 (2019)
Publication Year :
2019
Publisher :
KeAi Communications Co., Ltd., 2019.

Abstract

Analyzing the mass of behind-armor debris (BAD) generated by Rolled Homogeneous Armor (RHA) subjected to normal penetration of variable cross-section Explosively Formed Projectile (EFP) is the purpose of this paper. So theoretical analysis, numerical simulation and experimental data are combined to analyze the influence of variable cross-section characteristic on the time history of crater radius. Moreover the relationships between time history of crater radius (as well as mass of BAD) and the thickness of RHA (from 30 mm to 70 mm) and the impact velocity of EFP (1650 m/s to 1860 m/s) are also investigated. The results indicate that: 1) being compared to the variable cross-section characteristic is ignored, the theoretical time history of crater radius is in better agreement with the simulation results when the variable cross-section characteristic is considered; 2) being compared to the other three conditions of plug, the theoretical mass of BAD is in the best agreement with the simulation results when the shape of plug is frustum of a cone and the angle between generatrix and bottom is 45° and the axial length of mushroom is considered. Keywords: Explosively formed projectile, Behind-armor debris, Variable cross-section characteristic, Shape of plug, Axial length of mushroom, Theoretical model

Subjects

Subjects :
Military Science

Details

Language :
English
ISSN :
22149147
Volume :
15
Issue :
3
Database :
Directory of Open Access Journals
Journal :
Defence Technology
Publication Type :
Academic Journal
Accession number :
edsdoj.36bef1f282f4087bbb9bb8da7bd9711
Document Type :
article
Full Text :
https://doi.org/10.1016/j.dt.2018.10.006