棱形独立舱液化气船支承结构的局部强度研究

Study on Local Strength of Supports for Liquefied Gas Carrier with Independent Prismatic Tanks

液化气船的棱形独立舱依靠设置于底部的支承结构支持,支承结构的强度是该船型结构设计的重点。基于非线性有限元模型分析方法,真实地模拟支承结构的实际工作状态,分别对支承结构的支撑肘板、挡板及层压木等局部组件的应力或受力情况进行分析,研究外部条件及设计因素对强度的影响,提出提高结构强度的建议措施,为实际工程中支承结构的尺寸设计和分析提供参考。

The independent prismatic tanks of liquefied gas carriers are sustained by the supports distributed at the tank bottom,so the strength of these supports is the critical point for the structural design of the type of vessel.The actual working state is simulated based on a nonlinear finite element method,and a very detail analysis of the structural stress and force is pelformed for the local assemblies of the support,like bracket,dam plate and press wood.The influence on strength by external conditions and design factors are studied,and measures are proposed to improve the structural strength,which can provide reference for the design and analysis of support in'practical engineering.