Study on Model of Penetration into Thick Metallic Targets with Finite Planar Sizes by Long Rods

A finite cylindrical cavity expansion model for metallic thick targets with planar sizes, composed of ideal elastic-plastic materials, penetration high-speed long rod is presented by using the unified strength theory. Considering lateral boundary and mass abrasion target, resistance depth formulas are proposed, solutions which obtained MATLAB program. Then, a series different criteria-based analytical ranges ratios target radius to projectile (rt/rd) predicted. Meanwhile, numerical simulation performed ANSYS/LS-DYNA element code investigate variations in residual velocity, length, abrasion. It shows that various parameters have influences on antipenetration performance such as coefficient b, rt/rd, shape nose, impact velocity projectile, among has increased 18.95% b = 1 decreases 0 32.28% rt/rd 19.88 4.9.