Numerical Simulation and Experimental Investigation on New Type Jetting Projectile Charge

A new structure of jetting projectile charge (JPC) was proposed to solve the deficiencies of existing JPC, such as lower velocity and utilization ratio of explosive energy. The forming process of the new type JPC and the influence of truncate height of liners and additional structures on the JPC formation were studied based on Autodyn. An optimized JPC featuring high velocity and small velocity gradient was put forward and tested by experiments. The numerical results are in good agreement with the experimental ones, which indicates that the calculation method, material model and related parameters are reasonable. The correctness of the numerical simulation was also verified. The research results provide a certain reference value to further optimization of the design of JPC.