动态云雾形成及爆轰场特性

为获得动态云雾爆轰的超压场分布特征,采用空投方法实现动态云雾的形成和爆轰过程。利用高速运动分析系统和压力测试系统分别对动态云雾分散、爆轰过程和动态爆轰超压场进行测量,对动态云雾的燃料抛撒和超压场分布进行了研究,分析了轴向有加强杆装置结构和轴向无加强装置杆结构对动态云雾爆轰超压场的影响规律。结果表明:轴向无加强杆结构和轴向有加强杆结构的动态最大峰值超压分别为3.62 MPa和3.20 MPa,轴向无加强杆结构具有较大的毁伤距离;动态爆轰最大峰值超压较静态爆轰最大峰值超压提高31.2%,且动态爆轰毁伤距离大于静态爆轰。

Formation and Blasting Field Characteristics of Moving Cloud Detonation

In order to obtain overpressure distribution of moving cloud detonation, process of cloud dipersion and detonation was surveyed by airdrop. A high-peedmotion analyzer system and a pressure measurement system were used to measure process of cloud detonation and pressure field during explosion. Fuel dispersion and overpressure field were studied. The variation of blast parameters with propagation distance for non-stiffener structure and stiffener structure was analyzed. Results show the maxium value of peak overpressure for detonation with non-stiffenerstructure is 3.62 MPa, and with stiffener structure is 3.20 MPa. Detonation of non-stiffenerstructure has great damage range. Peak overpressure of detonation increased 31.2% with the same dose for static detonation. Mutilate distance for detonation is larger than static detonation.