中国舰船研究2018，Vol.13Issue(1)：38-45,8.DOI:10.3969/j.issn.1673-3185.2018.01.006
点蚀、裂纹损伤对船用加筋板剩余极限强度的影响
Influence of cracks and pitting corrosion on residual ultimate strength of stiffened plates
摘要
Abstract
[Objectives]Ships and offshore platforms serve in the harsh sea environment for a long time. Cracks and pitting corrosion will occur in such a structure and the damage will affect its ultimate strength. [Methods]To investigate the influence of cracks and pitting corrosion on ultimate bearing capacity,the ultimate strength of a structure under axial compression is studied by using a nonlinear finite element.The mesh size of a stiffened plate with cracks and pitting corrosion is first discussed.Then the influence of the relative positions of cracks and pitting corrosion,number of corrosion points and crack length impact on the residual ultimate strength of damaged stiffened plates is discussed via a series of calculations. [Results]The results indicate that the increase in crack length and pitting corrosion significantly decreases the ultimate strength of a stiffened plate.[Conclusions]This provides a useful reference for designing and maintaining ships and offshore structures in their life cycles.关键词
裂纹/点蚀/船用加筋板/非线性有限元/剩余极限强度Key words
crack/pitting corrosion/ship stiffened plate/nonlinear finite element/residual ultimate strength分类
交通工程引用本文复制引用
张婧,闫岩,徐烁硕,邵龙..点蚀、裂纹损伤对船用加筋板剩余极限强度的影响[J].中国舰船研究,2018,13(1):38-45,8.基金项目
国家自然科学基金资助项目(51509113) （51509113）
江苏省高校自然科学基金资助项目(16KJA580003) （16KJA580003）
