船-冰碰撞载荷下球鼻艏结构动态响应研究

摘要

A ship-ice collision numerical simulation is performed by using nonlinear finite element method. Structural dynamic response is carried out by researching the collisions between bulbous bow and ice with the same weight but different shapes, the same shape but different weights and different collision veloci-ties. The regularity of the damage deformation of the ship, the collision force and the energy absorption un-der different working conditions are revealed. The impact mechanism of the shape of ice, the weight of ice and the collision velocity on ship-ice collision is obtained, which provides reference for anti-ice load struc-tural design of ships.%文章利用非线性有限元法对船-冰碰撞进行了数值仿真，分别研究了船舶球鼻艏与同质量不同形状、同形状不同质量冰体发生碰撞以及不同碰撞速度下的动态结构响应特性，揭示了不同工况下船舶的损伤变形、碰撞力和能量吸收的规律，得到了冰体形状、冰体质量、碰撞速度等因素对船-冰碰撞的影响机理，为提高船舶抗冰载荷设计提供参考。