高速侵彻体碰撞化学子母弹头毁伤效应数值模拟

采用AUTODYN-3D数值模拟方法,对爆炸成形侵彻体高速碰撞下化学子母弹头有效载荷简化结构毁伤效应及力学机理进行了研究. 结果表明,对于典型的三层排布化学子弹有效载荷,子弹毁伤状态呈现为完好、变形、穿孔和碎裂4种典型模式,而且其分布显著受碰撞位置的影响,表现为复杂的多区间变化分布趋势. 进一步对化学子弹毁伤力学行为分析表明,子弹碎裂主要由高速侵彻体沿贯穿路径直接碰撞所引起,碎裂化学子弹高速流体喷射作用又导致部分化学子弹发生碎裂和穿孔,而相邻化学子弹间相互碰撞作用则是导致穿孔和变形的主要原因.

Numerical Simulation of Chemical Submunition Payload Damage Effects Impact by High Velocity Penetrator

The damage effects and dynamic behavior of chemical submunition payloads impacted by explosively formed high velocity penetrator were simulated by AUTODYN-3D code. The numerical results show that, when impacted by the high velocity penetrator, four typical states of intact, dented without leakage, ruptured with partial leakage and smashed/dustruction were produced for the typical payload with three tiers of chemical submunition. The distribution of these four states strongly depends on the impact position, and shows a complex multi-interval varying trend. The further dynamic analysis shows that directly hitting along the trajectory of high velocity penetrator is the dominant mechanism which causes the smashed damage to the chemical submunitions. Moreover, the leaked fluid ejection of the smashed chemical submunitions will cause an additional smashed and ruptured damage to the chemical submunitions. Additionally, the collisions among neighboring submunitions play important roles on the dented and ruptured damage to the chemical submunitions.