大块浮冰与船体碰撞的冰载荷研究

Research on Ice Load Caused by Collision between Large Floating Ice and Ship

采用数值模拟方法对某极地破冰船与大块浮冰碰撞产生的冰载荷展开研究,利用ALE流固耦合方法实现船体-浮冰-海水的耦合作用,分析浮冰尺寸、形状和船舶航速对船冰碰撞冰载荷的影响。结果表明:大块浮冰出现平移挤压破碎及翻转弯曲破坏的现象,碰撞冰载荷的有义值及均值随浮冰尺寸和船速增大而近似线性增加。

The numerical simulation method is used to investigate the ice load generated by the collision between a polar icebreaker and the large pieces of floating ice.The arbitrary Lagrange-Euler fluid-solid coupling method is used to realize the coupling effect between ship,floating ice and seawater.The impacts of floating ice size,ice shape and ship speed on the ice load during ship ice collision are analyzed.The results show that the large piece of floating ice is damaged sequentially by the translational crushing and the flipped bending,and the significant value and the mean value of the ice loads almost linearly increase with the increase of the size of the floating ice and the ship speed.