摘要
本文基于损伤圆柱壳在轴力和弯曲作用下的完全塑性的屈服条件提出了用于分析损伤圆柱壳的极限荷裁的完全塑性模型,它可方便地处理局部凹陷和整体弯曲的联合作用。与其它方法及实验结果比较表明此模型是简单的和有效的。同时还分析了各种参数对损伤园柱壳极限载荷的影响,为设计提供了指南。
The paper provides the fully plastic model used to analyse the ultimate strength of the
damaged tubular members based on the fully plastic yeild condition in the action of the axial
force and the bending moment.It can conveniently deal with the problem of combined overall
bending and denting deformation.Comparied with other methods'and experimental
results,it shows the simplisity and efficiency of the model.Meantime,we also analyse the
effect of the various parameters such as dent depth parameter δ_d the reduced slenderness
parameter λ_R and the overall bending deformation parameter δ_0 on the ultimate Strength of
the damaged tubular members,and it provides the guidance to design.
关键词
圆柱壳
近海结构
损伤
塑性模型
Tubular member
Damage
Ultimate strength
Plastic model
