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Experiment Investigations on Normal Reflected Blast Wave near the Spherical Explosive

ZHANG De-zhi,LI Yan,WANG Deng-wang,WANG Chang-li,ZHONG Fang-ping,LIN Jun-de(Northwest Institute of Nuclear Technology,Xi'an 710024,Shaanxi,China)  
The accurate pressure and impulse of reflected blast wave are very significant for the design of explosive vessel which can contain large explosive.The pressure,impulse and shock travel time of normal reflected blast wave were obtained by means of experiments at the range of the scaled distance is 0.098~0.5 m/kg1/3.The experience equations of the pressure,the scaled impulse and the scaled shock travel time vs.the scaled distance were fitted respectirely with the data in this paper and the literatures.The investigated results indicate that the pressure attenuates exponentially with the scaled distance increasing,the reflected impulse is directly proportional to the explosive equivalent and inversely proportional to the square of the distance.
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