Publications

Jiang, X. and Guedes Soares, C. (2008), “Nonlinear FEM analysis of pitted mild steel square plates subjected to In-plane compression”, Proceedings of the TEAM, Ergin, A. (Editor), Istanbul, Turkey

Pitting corrosion of the steel plates forming the hull and other major structural components of both commercial and naval ships can have a very considerable deteriorating effect on ship structural safety. In the paper, a series of nonlinear FEM analysis is carried out to investigate the effects of pits on ultimate compressive strength of plates, where main influential factors of both plates and pits are researched in detail. It is found that intensity of pits denoted by DOP(the ratio percentage of the corroded surface area to the original plate surface area) has significant and direct impact on degradation of ultimate capacity of plates among other factors, i.e., size ,depth of pits, slenderness of plate, etc. Moreover, in severely corrosive environment, thicker plates(smaller slenderness) may not bring about longer durability as expected. Further work should essentially be given to stochastic modeling of pits and its application in reliability analysis and maintenance policy making of marine structures.

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