冰-水耦合作用下船舶与浮冰碰撞动响应数值仿真研究

Numerical simulation of dynamic response of collision between ship and floating ice under ice-water coupling effect

船舶在碎冰区航行时会受到浮冰的碰撞,为了准确模拟浮冰碰撞载荷作用下的船体局部结构承载特征,应当考虑碰撞过程冰-水耦合作用的影响。本文采用瞬态动力学分析程序MSC.Dytran对某水面舰船在碎冰区航行时受浮冰碰撞的动态过程进行数值仿真,得到了受浮冰碰撞下的船体结构响应、碰撞载荷及碰撞过程中的能量转化特征,对浮冰尺度、碰撞位置、舰船航速对船体结构响应及碰撞载荷的影响进行了分析并给出了相应的结论。本文研究工作对于碎冰区航行舰船的载荷确定及结构设计具有重要的参考价值。

In order to accurately simulate the local structural response characteristics of ship hull under impact load of floating ice, the ice-water coupling effect during the collision process should be considered. In this paper, the transient dynamic analysis program MSC.Dytran was used to simulate the whole process of a certain surface ship impacted by floating ice while sailing in broken ice areas. The ship structural response,collision force and energy conversion characteristics during the process were obtained. The influences of floating ice scale, collision position and ship speed were analyzed and corresponding conclusions were given. The research works are of great reference value for determination of ice load and the structural design of ships sailing in broken ice areas.