船体结构对水下冲击波动态响应的数值研究

船舶的水下爆炸响应是一个重要而复杂的问题,对船舶抗爆能力的提高有着重要的意义.本文使用商业有限元程序ABAQUS对某船体在水下爆炸冲击波作用下的动态响应进行了数值模拟.该问题解决中包括流固耦合问题,边界条件的处理.详细给出了某船舶在水下爆炸的响应结果,揭示了船体的加速度响应、船体的应力响应、船体的速度响应3个方面的响应规律.通过和相关试验数据进行比较,表明数值结果与试验结果两者吻合良好.最后考察并给出了各层甲板在关键肋位上的点的应力和速度响应峰值.所得到船舶在水下爆炸下的响应规律,为船舶设计提供有力的依据.

The study of the warship damage by underwater explosion

The dynamical response to underwater explosion of a surface ship is an important and complex problem. It has great importance to improve the capacity of explosion resistance for a ship. In this paper, the dynamical response of a surface ship has been simulated by the commercial finite element program ABAQUS. The problems include fluid-solid coupling interaction and the handling of boundary conditions. We give the results of the response to underwater explosion for the ship in detail, revealing the acceleration response of the hull, the stress response of the hull, the speed response of the hull. The calculation results are good with experiments results, when compared with some relevant experiment data. The dynamical response characteristics of the ship is studied through mises and velocity of all deck. The dynamicalresponse law to underwater explosion of a surface ship is obtained. And this research provides a strong basisfor ship hull design.