含凹陷损伤FPSB典型加筋板剩余极限强度研究  

Remaining Ultimate Strength Analysis of Typical Stiffened Panel with Damage of a FPSB

作　　者：李晓东[1] 窦培林[1] 景宝金[2] 

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212003 [2]中国船舶及海洋工程设计研究院,上海200011

出　　处：《船舶工程》2017年第6期62-66,94,共6页Ship Engineering

摘　　要：选取一型FPSB典型加筋板结构,在考虑初始缺陷的情况下采用非线性元法,通过对比研究,选定(1/2+1+1/2)的加筋板模型以及合适的边界条件、网格尺寸;分别研究3种不同凹陷形状对加筋板极限强度的影响,选定以弧形凹坑为主要研究对象的凹陷形式;分别研究凹陷损伤加筋板随凹痕深度、凹痕长度、凹痕宽度及凹痕位置变化时结构在单轴受压情况下的极限强度变化情况。计算结果可对此型FPSB加筋板结构在凹陷损伤后的极限强度评估提供一定的参考。The nonlinear finite element method is used to study a type of stiffened plate with initial distortion imperfections of a FPSB hull girder. By comparative study, the one bay model （1/2＋1 ＋1/2） is chosen for the ultimate strength study, suitable boundary conditions and mesh size are also decided in this paper. Besides, the ultimate strength of stiffened plates with three types of damage shape are studied respectively, by which arc-shaped damaged is confirmed as the main study object. The ultimate strength under uniaxial axial compression with the change of damage depth, damage length, damage width, damage location are also researched. The results can be used to as a reference when evaluating the residual ultimate strength of the stiffened plate of the FPSB hull girder.

关 键 词：FPSB 加筋板 极限强度 单轴受压 

分 类 号：U661.43[交通运输工程—船舶及航道工程]