动能拦截器对子母弹头毁伤行为数值模拟

采用数值模拟方法对直接碰撞动能拦截器毁伤子母式化学有效载荷行为进行了数值模拟.结果表明,子母式化学有效载荷毁伤效果显著受碰撞位置和碰撞角影响,碰撞位置为弹头几何中心或两层子弹分界面时,子弹毁伤率明显提高.碰撞角存在最佳范围,且随碰撞位置的不同而变化.撞击子母弹前部,小角度情况下毁伤效果较好,而中部和后部,则在垂直撞击情况下毁伤效果较好.基于数值模拟结果,获得了碰撞角和碰撞部位对毁伤效果的影响规律,为中段动能反导毁伤评估、选择合理的拦截方式和动能拦截优化设计提供了依据. 

Numerical Simulation of Damage Behavior for Submunition Payloads Subjected to Kinetic Kill Vehicle

To investigate the lethality of kinetic vehicle against chemical submunition tactical ballistic missile, numerical simulations were carried out with Autodyn Hydrocode. The influences of strike angle and impact point on the damage effect of submunition were analyzed. The results show that, the damage effect of simulated submunition payload was significantly influenced by the impact point and strike angle. The damage rate of submunition was improved obviously when the impact point at the geometric center or the interface of submunition tiers. The optimal range of strike angle is different for various impact points. The damage effect is better for the situation of small strike angle and the impact point at the front of submunition payload, for another situation is upright strike angle and the impact point at the middle part or tail end. All these works can be beneficial to lethality assessment, interception mode adoption and KV optimum design for negating ballistic missile in midcourse phase.