Study of simple plane wave generator with an air-metal barrier  

作　　者：Wei XIONG Xian-feng ZHANG Zhong-wei GUAN Yong HE Liang QIAO Li-li GUO 

机构地区：[1]School of Mechanical Engineering.Nanjing University of Science & Technology [2]School of Engineering,University of Liverpool [3]Beijing Institute of Space Long March Vehicle

出　　处：《Defence Technology（防务技术）》2014年第2期190-197,共8页Defence Technology

基　　金：sponsored by the National Natural Science Foundation of China(NSFC10902053);the Zijin Intelligent Program,Nanjing University of Science and Technology (2013_ZJ_0101);Qing Lan Project of Jiangsu province and the Fundamental Research Funds for the Central Universities (No.2012XQTR006);the State Key Laboratory of Explosion Science and Technology (Beijing Institute of Technology)(KFJJ15-07M) for their great support on the research work presented in this paper

摘　　要：Plane wave generators(PWGs) are used to accelerate flyer plates to high velocities with their generated plane waves,which are widely used in the test of dynamic properties of materials.The traditional PWG is composed of two explosives with different detonation velocities.It is difficult to implement the related fabrication processes and control the generated waves due to its complicated structures.A simple plane wave generator is presented in this paper,which is composed of two identical cylindrical high explosive(HE) charges and an air-metal barrier.A theoretical model was established based on two different paths of the propagation of detonation waves,based on which the size of air-metal barrier was calculated for a given charge.The corresponding numerical simulations were also carried out by AUTODYN-2D based on the calculated results,which were used to compare with the theoretical calculations.A detonation wave with a flatness of 0.039 μs within the range of 70-percent diameter of the main charge was obtained through the simulations.Plane wave generators （PWGs） are used to accelerate flyer plates to high velocities with their generated plane waves, which are widely used in the test of dynamic properties of materials. The traditional PWG is composed of two explosives with different detonation velocities. It is difficult to implement the related fabrication processes and control the generated waves due to its complicated structures. A simple plane wave generator is presented in this paper, which is composed of two identical cylindrical high explosive （HE） charges and an air-metal barrier. A theoretical model was established based on two different paths of the propagation of detonation waves, based on which the size of air-metal barrier was calculated for a given charge. The corresponding numerical simulations were also carried out by AUTODYN-2D based on the calculated results, which were used to compare with the theoretical calculations. A detonation wave with a flatness of 0.039 μs within the range of 70-percent diameter of the main charge was obtained through the simulations.

关 键 词：平面波发生器 屏障 金属 空气 数值模拟 动态性能 制造工艺 传播路径 

分 类 号：TQ560.72[化学工程—炸药化工]