关键词: 爆炸变形 , 定向抛射与增益 , 起爆延时 , 安全隔爆 , 破片 , 数值仿真

Abstract: Using 2-D FCM，EPIC and 3-D DYNA non-steady elastoplastic hydrodynamic codes， key technical problems such as the selection oi initiation delay, safety of sympathetic initiation, case deforming driven by detonation，ejection control and aiming gain of fragments in detonatively de?formable aimable waThead were investigated under the condition of asymmetric and asynchronous initi?ation. The possibility of using the principle of detonatively deformable aimable to solve the difficulty that aiming gain of fragments along peripheral direction is proved. Rules that apply this principle to design the waThead are proposed.

Key words: deformation by explosion , aiming ejection and gain , initiation delay , safety of sympa?thetic initiation , fragment , numerical simulation