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.
出处
《北京理工大学学报》
EI
CAS
CSCD
1992年第1期26-33,共8页
Transactions of Beijing Institute of Technology
关键词
爆轰波
冲击波斜反射
金属
detonation wave: Mach stem: reflection of shock waves
