NUMERICAL SIMULATION OF DOUBLE EXPLOSIVELY FORMED RING WARHEAD
An charge, annular EFPs with cone liner, was designed which can form two ring-shaped projectiles--(Double Explosively Formed Ring. DERF). DEFR is a novel warhead in particular it concerns warheads having cutting and breaching effects in the conventional brick walls or reinforced concrete walls, which make it suitable for perforating requirements in the urban operation. DEFr warhead consists of a charge of explosive material and two annular metal liners. The front surface of the charge includes two annular front surface portions, portion, circumscribing the axis. When the charge is detonated, materials from the two annular liners are formed into two EFR projectiles and can breach effects in the concrete target. The ringshaped projectile formation process and characteristic of penetrating concrete target was studied by numerical simulation. The results indicate that the double annular liners configured with certain angle can form two asymmetric backward folding ring-shaped projectiles. The radial dispersion of the projectiles is smaller than the deflection angle that designed. Whether penetrating perpendicularly or obliquely in a 1.0 charge diameter (CD) stand-off, the formed inner EFR projectile can produce holes at least 1.7 CD in diameter in the concrete wall. The outer EFR projectiles bounce and cant engage penetration effectively because of the angle of incidence in the process of perpendicular impact; The outer EFR projectiles can perforate the target partially in the process of oblique impact. The inner EFR projectile together with outer EFr projectile can form a larger hole through a wall of a target in the process of oblique impact than in the process of perpendicular impact.
LI Yin-liang HUANG Yao-hua ZHANG Yong-sheng GAO Tian-hong ZHANG Pei-jun FU Yu-yan XUE Qin-yun
No. 203 Institute of China Ordnance Industries, Xian 710065,China No. 618 Institute of China Aviation Industry Corporation I, Xian 710065, China
国际会议
25th International Symposium on Ballistics(第25届国际弹道会议)
北京
英文
837-844
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）