Numerical assessment of experiments on the ultimate strength of stiffened panels with pitting corrosion under compression

Numerical assessment of experiments on the ultimate strength of stiffened panels with pitting corrosion under compression
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受压点蚀加筋板极限强度实验数值评估

DOI:
10.1016/j.tws.2018.09.029
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发表时间:
2018-12
影响因子:
6.4
通讯作者:
C. Guedes Soares
C. Guedes Soares
中科院分区:
工程技术2区
文献类型:
--
作者:
Xing Hua Shi;Jing Zhang;C. Guedes Soares

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通过数值模拟评估了加筋板在压缩载荷下的极限强度,以与试验进行比较,以调查不同凹坑位置、凹坑直径和凹坑深度对极限强度的影响。通过一系列非线性有限元分析,验证模型用于点蚀对加筋板剩余极限强度影响的数值研究。本文将针对受轴向压缩载荷且有初始变形的加筋板,研究凹坑的位置、直径、数量、深度和腐蚀体积损失等参数。研究发现,凹坑会导致加筋板的屈曲失效。本文讨论的所有参数对点蚀加筋板的剩余极限强度都有显著的影响。通过引入板伸长和柱伸长的折减,导出了计算公式。
The ultimate strength of stiffened panels under compressive loads is assessed by numerical simulations, in order to compare with tests made to investigate the influence on the ultimate strength of varying pit location, pit diameter and pit depth. The validated model is them used for a numerical study on the influence of pitting on the residual ultimate strength of stiffened panels by a series of non-linear finite element analysis. The parameters of pit position, diameter, number, depth, and corroded volume loss will be investigated for the stiffened panels subjected to axial compressive load with initial deformations. It is found that the pits will induce the buckling failure of stiffened panels. All parameters discussed in this paper have significant influence on the residual ultimate strength of the pitting corroded stiffened panel. A formula was derived by introducing the reduction of plate slenderness and column slenderness.
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发表时间: 2013-03
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