STUDY ON THE TRANSFORMATION MECHANISM OF DUAL-MODE ABOUT THE SHAPED CHARGE WITH A WAVE SHAPER

A shaped charge was produced with a wave shaper that can transform dual-mode penetrators by changing the single-point detonation location. The theory of denotation wave formation was applied to analyze the changes of liner surface pressure in different initiation situations. An analytical model was established for the EFP(Explosively Formed Projectile)formed by denotation at the top of a liner, and for the JPC(Jetting Projectile Charge)formed by denotation at the center of a charge. The ways of orthogonal optimizing design and LS-DYNA finite element simulation software were used to obtain the suitable structural parameters of a uniform-thickness eccentric hemisphere liner, and X-ray imaging and penetration experiments were then conducted. The penetration depth of EFP in a steel target was 0.64D_k (the charge diameter, while that of JPC was 2.42D_k when the burst height was approximately 13D_k).