水介质对船冰碰撞结构响应的影响

以极地运输船舶艏部作为研究对象，建立基于流固耦合算法的船-水-冰耦合技术对三维船艏与冰体碰撞的结构响应问题进行了研究，结合非线性有限元软件LS-DYNA对比分析了考虑流固耦合(即有水介质)的船-水-冰碰撞模型和不考虑流固耦合(即无水介质)的船-冰碰撞模型与同质量不同速度的冰体发生碰撞下的结构响应问题，揭示了不同碰撞工况下船舶在损伤变形、碰撞力、速度等方面的变化特征及差异，同时阐述了水介质在船冰碰撞中的作用，可以为极地运输船舶的抗冲击结构设计提供参考。

Study on the Influence of Water Medium on the StructureResponse of Ship Ice Collision

The bow of the polar ships is chosen as the object of study. The ship-water-ice coupling technique based on the fluid-solid coupling algorithm is developed to study structure response of a three-dimensional ship bow and ice body collision. Then, comparing and analyzing the structural responses of two models (Ship-water-ice collision model considering fluid-solid coupling and ship-ice collision model without considering fluid-solid coupling) collided with different velocities ice body by the nonlinear finite element software LS-DYNA. It reveals the features of the ship deformation, impact force, speed, and the influence of the water medium on the collision of the ship and ice under various programs. Therefore, it can provide reference for the design of the impact structure of the polar transport ships.