为了减少非致命弹药爆炸产生的金属破片数量,设计了金属延期管抛离结构,根据点火药燃烧特点和结构作用原理,分析了抛离过程,建立了抛离弹道模型,得到了延期管内点火药气体压强变化和延期管速度变化规律,并利用高速摄影对试验过程的影像分析,结果表明仿真所得最大速度与实际测试值的误差仅为0.5m/s,说明数学模型合理,为延期管抛离结构的设计与优化提供了理论指导。

In order to reduce the number of metal fragment produced by non lethal ammunition explosion, the cast structure of metal extension tube was designed. Based on the burning characteristics of the ignition composition and the structural action principle, the stripping process was analyzed and the stripping trajectory model was established. The change laws of the gas pressure and the velocity of the extension tube were obtained, and the model was verified by high speed photography. The results showed that the error between the maximum speed and the actual speed was only 0.5 m/s. It was proved that the mathematical model was reasonable and it provided theoretical guidance for the design and optimization of the structure of the extension tube stripping.