Jet Formation Theory of Hyper-Cumulation Charge with Additional Body

Abstract

The Russia scholar Minin has proposed that the shaped charge with additional body (Addbody) called hyper-cumulation charge (HCC) can form a jet called hyper-cumulation jet (HCJ) with higher velocity and mass. In this work, a theoretical model for calculating the velocity and mass of HCJ is presented, which shows the relationship between the characteristics of the HCJ and the parameters of the structure of HCC as well as the material, including the thickness, density, diameter, and cone angle of the Add-body and truncated liner. A series of numerical simulations of the HCJs are carried out by changing the density of the Add-body. The results are compared with the theoretical calculations and they are in good agreement. It can be concluded that in this work, when the density of the Add-body is about 12000kg/m3, the HCC can form a better HCJ with the tip velocity of 8673m/s, 1400m/s larger than the traditional shaped charge jet (SCJ), and the model can greatly predict the HCJ formation process and provides a quantitative design method for HCC.