一种准二维柱面爆炸波加载装置的设计与验证

基于竖直爆轰管和径向Hele-Shaw Cell,设计并搭建了一套准二维柱面爆炸波加载装置,可以实现对Hele-Shaw Cell内部材料界面的径向冲击加载.竖直爆轰管内部的预混气体在底部点燃后,形成向上传播的冲击波,冲击波冲破爆轰管开口与Hele-Shaw Cell底板开孔之间的隔膜后,被Hele-Shaw Cell...

Design and Verification of a Quasi-Two-Dimensional Shock Wave Loading Device

Based on the vertical detonation tube and the radial Hele-Shaw Cell,a set of quasi-two-dimensional cylindrical explosive wave loading device was designed and built in this paper,which can realize the radial impact loading of the material interface inside the Hele-Shaw Cell.The premixed gas inside the vertical detonation tube was ignited to form an upward propagating shock wave,which was reflected by the upper plate of the Hele-Shaw Cell after the diaphragm was broken.Then,a divergent cylindrical wave propagating radially was formed.It was found that the cylindrical shock wave in Hele-Shaw Cell had good repeatability and annular pressure uniformity.The CFD numerical simulation was carried out for the detonation process and the cylindrical wave propagation process inside the Hele-Shaw cell.The law of overpressure attenuation with power function of radial propagation distance was obtained through function fitting,revealing the influence of detonation process inside the detonation tube on the overpressure and impulse distribution inside the Hele-Shaw Cell.It was found that the loading parameters of shock wave in Hele-Shaw Cell can be regulated by adjusting the ignition and detonation process and the initial conditions of premixed gas.