Study on dynamic mechanical properties of tungsten copper alloy and application of shaped charge

Abstract The tungsten-copper alloy liner has better performance than the copper liner. In order to study jet forming and penetration characteristics dynamic mechanical properties of alloy-shaped charge liner, this paper uses a multi-functional experimental machine Hopkinson bar device carry out quasi-static tensile impact tests, respectively, fit Johnson-Cook constitutive equation. obtained parameters are used numerical simulations compared with experiment. results show that stress curve is higher stress, strain rate strengthening effect more obvious. There an adiabatic temperature rise at obvious thermal softening different rates. At highest rate, it shows plasticizing effect, certain sensitivity rate. precision model higher, can describe plastic flow high When fitted in simulation, error between simulation actual small. help follow-up on influencing factors fracture, including material strength injection instability, integration shear band hydrodynamics, comparison molding liners provide relevant data.