多孔介质中收聚圆锥冲击波的相互作用的实验研究

我们从实验上研究了铝粉、铁粉和钨粉中收聚圆锥冲击波的相互作用,并导出了利用实验数据计算此波锥顶角的公式。

EXPERIMENTAL INVESTIGATION OF CONVERGENT CONICAL SHOCK WAVE INTERACTION IN POROUS MEDIUM

In this paper, the interaction of convergent conical shock waves in samplesof aluminium powder, iron powder and tungsten powder are investigated experimentally,anda formula of calculating flaring angle of these waves from experimental data is derived.In order to form the convergent conical shock wave, the sample is put in a explosive tube (20mmlD, 40mmOD) made of RDX/epoxy (80/20). In nine cases out of ten, the explosive tube is 60mm in height.A detonator initiates a detonation which, in turn, transmits a shock through a metal sheet into the explosive tube and initates detonation for it. A PMMA assembly located at the bottom of the explosive tube is for recording the wave configuration in sample.The whole process is recorded by a high speed reating mirror camera. Two kinds of PMMA assembly are used in the explimenls. One is made of PMMA sheets, the other is a piece of convex PMMA plate.