Ultimate strength assessment of steel stiffened plate structures with grooving corrosion damage. (1st July 2015)

• Record Type: Journal Article
• Authors: Wang, Yikun; Wharton, Julian A.; Shenoi, R. Ajit
• Is Part Of: Engineering structures. Volume 94(2015:Jul. 01)
• Page Start: 29
• Page End: 42
• Publication Date: 2015-07-01
• Subjects: Nonlinear finite element analysis -- Ultimate strength -- Grooving corrosion -- Stiffened plate; Structural engineering -- Periodicals; Structural analysis (Engineering) -- Periodicals; Construction, Technique de la -- Périodiques; Génie parasismique -- Périodiques; Pression du vent -- Périodiques; Earthquake engineering; Structural engineering; Wind-pressure; Periodicals; 624.105
• DOI: 10.1016/j.engstruct.2015.02.028
• Languages: English
• ISSNs: 0141-0296

Abstract

Highlights: New approach to numerically simulate grooving corrosion on stiffened steel plates. Weld connections, weld-induced residual stresses and initial deflections considered. Insights on the corrosion effect of load shortening curves and ultimate strength. Assessment of the generality of empirical formulas. Abstract: An approach to simulate the behaviour of steel stiffened plates subjected to weld-induced grooving corrosion using nonlinear finite element modelling is proposed. The model includes the effects of different initial geometric imperfections and weld-induced residual stresses. The influence of corrosion damage on the load shortening curves and ultimate strength is investigated. It is shown that grooving corrosion depth has a greater influence on structural performance as compared with corrosion width for the same volume loss. Such corrosion damage could cause a significant reduction in the ultimate strength of a plate panel. Considerations of weld-induced deflection and residual stresses further enhance the corrosion influence on the strength capacity.