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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

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【作者】 张宝平姜春兰洪兵刘长林鲁春

【Author】 Zhang Baoping Jiang Chunlan Hong Bing Liu Changlin Lu Chun (Mechanics and Engineering Department, Beijing Institute of Technology)

【机构】 北京理工大学力学工程系北京理工大学力学工程系

【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φ0=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。

【Abstract】 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.

  • 【文献出处】 北京理工大学学报 ,Journal of Beijing Institute of Technology , 编辑部邮箱 ,1992年01期
  • 【分类号】O384;O382.3
  • 【被引频次】3
  • 【下载频次】129
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