CSR节点力施加方法对集装箱船总强度评估的适用性研究

以10 000 TEU集装箱船为例,分别采用DNV规范中的节点力法及《油船散货船共同结构规范》(CSR)中的节点力法对其总强度进行计算。对比二者的计算结果,分析CSR节点力施加方法对集装箱船总强度评估的适用性及其优缺点。结果显示,CSR节点力施加方法适用于集装箱船总强度评估,且可有效避免局部应力集中现象。     

舰船钢-铝结构过渡接头的应用及节点设计

本文介绍了结构过渡接头(STJ)的类型及特点,应用弹塑性理论分析了铝合金-纯铝-钢类型STJ的力学性能,探讨了各种类型STJ在舰船上的应用,并进行了节点设计.     

Novel hot spot stress calculations for welded joints using 3D solid finite elements

This paper presents a novel numerical method through which less mesh-sensitive local stress calculations can be achieved based on the 3D solid finite element, adhering strictly to the original definition of hot spot stress. The traction stress, which is defined at 0.5t and 1.5t away from the weld toe, was calculated using either a force equivalent or work equivalent approach, both of which are based on the internal nodal forces on the imaginary cut planes. To confirm the validity of the proposed method, 5 typical welded joints widely used in ships and offshore structures were analyzed using 5 different solid element types and 4 different mesh sizes. Finally, the methodology was applied to the more complicated pontoon-column connection part of a semi-submersible RIG under a realistic wave load, and the performance of the proposed method was compared with the traditionally used surface stress extrapolation method.