复合装药密闭空间爆炸能量释放特性

In order to research the explosion characteristics of HMX-based aluminized explosives with different charge structures in confined space, experiments on the confined explosion of samples with composite charge structures and uniform charge structures were carried out. A closed explosion experimental device with temperature and pressure measurement was established. The explosion pressure and temperature of the sample with composite charge structure were compared with the same sample having the uniform charge structure. The result shows that the peak pressure and quasi-static pressure of the explosion shock wave of the sample with composite charge structure are 12.7% and 8.0% higher than those with the uniform charge structure, respectively. The explosion energy release in confined space can be improved through the composite charge structure, which consists of the outer layer with high detonation velocity explosive and the inner layer with high aluminum/oxygen ratio explosive. The peak explosion temperature of composite charge structure is 621℃, which decreses by 124℃ compared with the uniform charge structure of 745℃, but the samples with composite charge structure can maintain a high temperature around 600℃ in confined space for a long period.