Numerical Simulation Research on the Formation of MEFP

Aim at the problem of formation of multi-mode penetrators with the same shaped charge structure, the fragment mode was formed by attaching metal bar to the front of warhead. Through LS-DYNA simulation procedure, the formation of MEFP influenced by bar was researched, and the effect law of the position, framework and material of bar with the velocity and spray pattern of MEFP was gained. It was found that, the bar position with I to 5 millimeter can form EFP fragment with good velocity and spray pattern, and the damage ability of warhead can be optimized by modularization design bar framework based on the target. The research provides reference for designing multi-mode warhead.