Influence of initiation methods on formation of integral MEFP warhead parameter

To investigate the effect of the initiation methods on the formation of MEFP(multiple explosively formed penetrators) warhead parameter,the process of the liners formed penetrators in three different initiation methods was simulated by using LS-DYNA software.Based on the detonation wave action theory,the shapes and velocities of the projectiles were theoretically analyzed.The study indicates that when using the point of initiation and the annular initiation,the radial dispersion angle and the damage area of the projectiles were larger,but the velocities of the around projectiles were lower,the shapes were irregular and the aerodynamic performance was weak;that when using plan wave initiation,the radial dispersion angle and the damage area of the projectiles were minimal,but the velocities of the projectiles were bigger and the aerodynamic performance was good;and that when using plan wave initiation,the efficiency of explosive,the aerodynamic performance and penetration of the projectiles were all the best.