用塑性节点法作船体极限强度分析  

Ultimate Strength analysis of Ship Hulls Based on Plastic Node Method

作　　者：白勇 徐向东[2] 崔维成[2] 

机构地区：[1]挪威斯塔万格大学 [2]中国船舶科学研究中心

出　　处：《船舶力学》1998年第4期54-62,共9页Journal of Ship Mechanics

摘　　要：本文基于塑性节点法提出了一种较为精确而又高效的非线性有限元计算方法。本方法结合弹性大位移分析理论以及塑性铰模型，同时考虑几何、材料非线性及初始变形、残余应力等因素的影响，发展了一系列的有限单元，如梁—柱元、加筋板元及剪切板元。最后对加筋板格及船体纵向极限强度等工程实际问题作了分析并与试验作比较，证实了本方法的正确性。This paper presents an efficient and more accurate nonlinear finite element procedure based on the Plastic Node Method by combining elastic large displacement analysis theories with a plastic hinge model, directly accounting for the geometrical and material non - linearity and the influence of initial deformation and residual stress. A set of finite elements, such as beam - column elements, stiffened plate elements, and shear panel elements is developed.Pratical applications to ultimate strength analysis of stiffened panels and ship hulls are presented and compared with tests.

关 键 词：塑性节点法 有限元 极限强度 船体 

分 类 号：U661.43[交通运输工程—船舶及航道工程]