小当量水中爆炸冲击波实验及数值模拟  

Experiment and Numerical Simulation Investigation of Small Scale Underwater Explosions

作　　者：赵生伟[1] 张颖[1] 王占江[1] 梁志刚[1] 

机构地区：[1]西北核技术研究所,陕西西安710024

出　　处：《实验力学》2009年第3期259-263,共5页Journal of Experimental Mechanics

摘　　要：在小当量(≤10g TNT)爆炸水箱装置中分别进行了0.125g、1.00g、3.37g、8.00g TNT当量PETN球形炸药水中爆炸实验。采用PCB压电型传感器测量水中爆炸冲击波压力脉冲,将实验数据拟合所得公式与文献的经验方程相比较,两者具有较好符合。另外,在小于20%的相对误差范围内,采用AUTODYN一维模拟计算能够预测和验证实验结果。因此,通过小当量水中爆炸实验获得的经验公式可推广到大当量水中爆炸实验。这样既能克服大当量水中爆炸实验耗费大、危险性高等困难,也能够较精确地预估峰值压力。Small equivalent weight of PETN charge （≤10g TNT, 0. 125g,1.00g,3.37g,8.00g PETN, respectively） underwater explosion experiments were carried out in an explosion water tank. Shoekwave pressures were obtained by using PCB piezoelectric sensor. By comparing the formula obtained from the fitted experimental data with the empirical formula from literatures, both are quite consistent. Within the range of 20% relative error, one-dimensional AUTODYN numerical simulation can forecast and validate the experiment.al results. So the empirical formula obtained from small equivalent weight underwater explosion experiment may be extended to large equivalent weight underwater explosion experiment to overcome the difficult of high expenditure and fatalness. On the other hand, shockwave peak pressure may also be exactly estimated.

关 键 词：水中冲击波 爆炸水箱 

分 类 号：TB122[理学—工程力学]