水下爆炸冲击波的数值模拟研究  

The study on numerical simulation of underwater blast wave

作　　者：张振华[1] 朱锡[1] 白雪飞[1] 

机构地区：[1]海军工程大学船舶与海洋工程系,湖北武汉430033

出　　处：《爆炸与冲击》2004年第2期182-188,共7页Explosion and Shock Waves

摘　　要：应用商业有限元程序MSC.DYTRAN数值模拟了球形药包在无限水域中爆炸产生的冲击波。通过和经验公式计算结果的比较,证明采用合理的计算参数和有限元模型能够较好地模拟水下爆炸冲击波的传播过程。通过调整水的状态方程参数,达到了提升冲击波峰值应力的效果,从而有效地降低了单元数量和计算时间。Blast wave produced by sphere charge exploding under infinite water region is simulated by using commercial FEM progrom MSC.DYTRAN. The results show that the program is able to simulate blast wave well if reasonable parameters and fine FEM model are adapted. The feasibility of this method is assured by comparison of simulation results and empirical results. Finally, the peak pressure of blastwave is increased by adjusting the parameter in polynomial equation of state of water. Therefore, the number of water element and simulating time are reduced effectively.

关 键 词：爆炸力学 水下爆炸 数值模拟 冲击波 舰船抗爆防护 有限元程序 MSC.DYTRAN 

分 类 号：U674.703.7[交通运输工程—船舶及航道工程] O382.1[交通运输工程—船舶与海洋工程]