偏心亚半球药型罩结构参数对杆式射流成型的影响OA

Aiming at the problems of traditional shaped charge jets such as small explosion height,easy fracture and insufficient explosive formed projectile(EFP)velocity,the influence of eccentric sub-hemispherical liner structural parameters on rod-type jet formation is studied in this paper.The results show that increasing the length-diameter ratio significantly improves the jet speed and effective length,and the jet head's speed reaches 4,827 m/s at C=1.8;increasing the wall thickness reduces the jet performance,and a slender jet with reasonable velocity gradient is formed at B=2 mm;when the eccentricity P=70 mm,the jet head's speed increases to 4,904 m/s;when the radius of curvature R=170 mm,the effective length increases to 186.5 mm.The final optimized parameter combination is C=1.8,B=2 mm,P=70 mm,R=170 mm,the jet head's speed is 4,904 m/s,the tail's speed is 2,136 m/s,and the effective length is 186.5 mm.It can form a continuous dense high-quality rod-type jet,providing theoretical support for the design of shaped charge warheads.