用于药床动态挤压应力研究的半密闭爆发器仿真

Semi-closed Bomb Simulation Using Study Dynamic Extrusion Stress of Charge Bed

建立了用于发射药床动态挤压破碎应力研究的半密闭爆发器控制方程组,进行了半密闭爆发器数值与物理仿真。仿真结果表明,调整半密闭爆发器的装填参数可改变半密闭爆发器内压力变化规律。半密闭爆发器物理仿真与射击试验表明,半密闭爆发器气体压力与射击试验弹底药床气体压力变化规律相一致,为真实再现发射药床在弹道环境下的挤压破碎过程提供了理论基础,为发射装药发射安全性研究提供了新手段。

The semi-closed bomb control equations using study dynamic extrusion stress of propellant charge bed were established, and some experimental and numerical simulations were tested. The results show that the change law of pressure in semi-closed bomb can be adjusted by changing the loading parameters of semi-closed bomb. The experimental simulation of semi-closed bomb and shoot test show that the pressure change law of semi-closed bomb is well with real shoot, which provides the theoretical base for really repeating the extrusion and fracture process of propellant charge bed under ballistic environment and provides a new method for study on launch safety of propellant charge.