爆轰波在金属板面斜反射现象的实验观测与分析  

Experimental Investigations on the Oblique Reflection of Detonation Waves at the Explosive - Metal Interface

作　　者：张宝平[1] 姜春兰[1] 洪兵[1] 刘长林[1] 鲁春 

机构地区：[1]北京理工大学力学工程系

出　　处：《北京理工大学学报》1992年第1期26-33,共8页Transactions of Beijing Institute of Technology

摘　　要：采用脉冲X射线照相、高速扫描照相、压阻测压及电探针测时等技术对B炸药-铜板系统中爆轰波斜反射现象进行了系统观测.确认在入射角φ_0=65°时的确发生了非正规斜反射(马赫反射)现象.但压阻测压表明,此时的压力却比理想爆轰理论的预告值低约30％.这与Los Alamos实验室学者们获得的结果极为相似.结合二维数值计算结果,对这一现象进行了分析,并提出了见解。The oblique reflection phenomena of detonation waves occurring at the explosive - metal interface have been investigated by means of the X-ray flash, high speed streak photography, manganic gauge and electric - probe techniques respectively. Optical observations showed clearly that the Mach stem occurred definitely at an incident angle of 65?for a composition B - copper plate system. The time - front of detonation wave as measured by the electric - probe technique also gave similar results. However, the measured shock pressures at the same incident angle by use of manganic gauge inserted in the explosive - metal interface were only 36±2GPa,much lower than that (51GPa) predicted by the ideal detonation theory. Such a discrepancy as large as 30% is rather remarkable. An analysis and relerant discussion is is presented.

关 键 词：爆轰波 冲击波斜反射 金属 

分 类 号：O382.3[理学—流体力学]