Influence of Explosive and Liner Cone Angle on the Performance of Standardized Shaped Charge Jet

Abstract

Standard shaped charge of 50mm diameter, widely used in evaluation of explosive/munitions vulnerability against metal jet, is extensively studied with the help of LS-DYNA software and field tests. Four different shaped liners with cone angles including 46 degrees, 48 degrees, 50 degrees, and 60 degrees respectively, configured with RDX-based and HMX-based PBXs, are simulated to find optimum jet velocity and width. Simulation results show that shaped charge jets of liner cone angles of 46 degrees and 48 degrees configured with HMX-based explosive, are more excellent than the other configuration of liner cone angles and RDX-based explosive. In field tests velocity and width of metal jet tip are elaborately measured by the help of X-ray radiograph, whose Vj2d value is a very important parameter detemining penetration capability of metal jet. Field test results show that shaped charge jet of liner cone angles of 46 degrees configured with HMX-based explosive, having a desirable Vj2d value no less than 360mm3/μs2 and penetraion against larger than 127mm thick steel plate.