Research on the application of composite charge structure in axial premade fragment warhead

In order to improve the initial velocity and distribution density of axial premade fragment warhead fragments, a coaxial dual element cylindrical composite charge structure was designed. LS-DYNA finite element software was used to study the coaxial dual element composite charge structure with Comp-B inner layer explosive and JO-9159 outer layer explosive. The scattering characteristics of fragments under multi-point synchronous detonation were compared with those under a single charge structure. Research has shown that the design of composite charge structure (high detonation velocity explosives for the outer layer and low detonation velocity explosives for the inner layer) can improve the initial velocity and distribution density of fragments in axial premade fragment warhead. For this structure, the initial velocity of fragments has been increased by 121m/s, and the scattering angle of fragments has been reduced by 4.5 °