多弹重复爆炸下侵彻通道内碎屑运移特性研究

Research on Debris Transport Character in Penetrating Channel under Multi-projectiles Repetitive Explosion

为了增加钻地武器的侵彻深度,提出一种"串联式"多弹连续爆炸作用方式。在单发弹静爆试验的基础上,拟合出多弹爆炸的周期性爆炸荷载曲线。通过FLUENT软件与EDEM软件耦合数值模拟可知,侵彻通道深度1 m时周期性爆炸荷载作用下碎屑的运移能力得到增强,同时进一步研究了介质碎屑运移特性的影响因素。仿真结果表明:介质碎屑的运移能力与爆炸荷载峰值成正比,与碎屑粒径及弹体偏离钻地通道轴线距离成反比。

In order to increase the penetration depth of weapons,a new scheme of tandem multi-projectile contin-uous explosion was put forward. Based on static explosion test of single projectile,the periodical explosion load curve of multi-projectile explosion was also fitted. Through the coupling numerical simulation by the software FLUENT with EDEM,within 1m deep penetrating channels,the debris transport capability was enhanced under continuous explo-sion load. In addition,the influence factors of debris transport character was discussed. Results showed that debris transport capability was proportional to the peak value of explosion load,and inversely proportional to debris particle size and the offset distance of projectile and penetrating channel.