炸药爆炸驱动壳体破裂及液体喷射过程试验研究

采用高速分幅照相技术对炸药爆炸驱动不同壁厚抛撒装置的壳体变形、裂纹产生,液体射流形成及其发展过程进行了试验研究,获得了清晰的试验图像.对回收破片观察和统计分析,发现两种厚度壳体的破裂方式存在较大差别:壳体厚度为3 mm时形成的破片面积较大,数量少,以长条形为主,而厚度为1.5 mm时破片面积较小,数量多.利用扫描电镜对...

Experimental Studies on Shell Fracturing and Jet Forming and Developing Process Driven by Detonation

The high-speed framing photography was applied to observe the shell distorting, expanding fracture of scattering mechanism of different thickness driven by detonation, and jet forming, developing of explosion spraying. The photos about the experiments were obtained clearly. There have different fracturing modes of the two thickness shells from macroscopic analysis and statistics of the collected fragments. The results show that the fragments of 3mm thickness are much bigger, longer and fewer than them of 1.5mm. According to the SEM analysis of fragments section, their formation is mostly caused by the shear fracture. And jet fracturing process of explosion spraying may be divided into three stages:integral injection, interface appearing in flocculent and breaking, small water droplets forming. The experimental rusults can provide references for calculation model and characteristic parameter of numerical simulation.