基于全耦合技术的船体结构碰撞性能研究  

Collision behavior of structural analysis in ship collisions based on full-coupling technology

作　　者：刘昆[1,2] 王自力[2] 张延昌[2] 唐文勇[1] 

机构地区：[1]上海交通大学海洋工程国家重点实验室,上海200240 [2]江苏科技大学船舶与海洋工程学院,江苏镇江212003

出　　处：《船舶力学》2015年第5期574-581,共8页Journal of Ship Mechanics

基　　金：国家自然科学基金(51379093);船舶预研支撑技术基金项目(14J1.3.1);江苏省船舶先进设计制造技术重点实验室开放研究基金(CJ1305)

摘　　要：由于船舶碰撞问题的复杂性,通常是将船舶碰撞的外部机理与内部机理分开研究。作者基于"全耦合"分析技术,建立撞击船与被撞船整船模型,成功解决了船体与流场、撞击船与被撞船的耦合。此外,考虑撞击船与被撞船同步损伤,将内部机理同外部机理同步分析。通过数值仿真计算,分析了碰撞后撞击船与被撞船的运动、能量转化以及碰撞力、损伤变形及各构件的吸能情况。另外,开展多种碰撞工况计算研究,得出了便于工程应用的极限撞速曲线,为后续的船舶碰撞研究提供了技术支撑。Due to the complexity of ship collision, the analysis procedures are divided in to two parts： the external mechanics and internal mechanics. This paper successfully resolved the way of fluid-structure coupling and the ship-ship coupling based on the full-coupling technology. In collision simulation, ship structures around strike position were modeled as deformable using Lagrange finite element meshes. According to the FEM analysis, the movement of ships, damage behavior and collision force as well as energy absorption were investigated. With many kinds of collision cases research, a curve of ultimate collision velocity was obtained. All of above can also provide technical supports for the future ship collision research.

关 键 词：船舶碰撞 同步损伤 全耦合分析技术 极限撞击速度 数值仿真 

分 类 号：U661.4[交通运输工程—船舶及航道工程]