装药沉底爆炸峰值压力试验及数值模拟研究

Experiment and Simulation on Peak Pressure of Underwater Explosion of a Bottom Charge

沉底装药水下爆炸涉及复杂的动态边界效应,其载荷特性与装药自由场水中爆炸有显著不同。本文通过模型试验和数值模拟,对沉底装药水下爆炸峰值压力传播和分布规律进行了研究,结果表明:沉底装药水下爆炸峰值压力随着爆距的增加而衰减,且呈半球形分布;对于相同爆距各点,最大峰值压力通常出现在装药靠近水底面一侧的斜上方。

The dynamic load of underwater explosion of a bottom charge is different from that of explosion of charge in infinite water because of the influences of boundary conditions. The pressure propagation and distribution of bottom charge underwater explosion are studied through model experiments and numerical simulation. Both the experimental and numerical results show that the peak pressure of underwater explosion of bottom charge decreases with the increase in the distance,and the pressure is hemispherically distributed,where the peak pressure is on a side of the charge near sea bottom.