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Publications
Garbatov, Y., Rudan, S. and Guedes Soares, C. (2002), “Fatigue Damage of Structural Joints Accounting for Nonlinear Corrosion”, Journal of Ship Research, Vol. 46, Issue 4, pp. 289-298
Analysis of the infuence of corrosion on the stress concentration factors of typical ship
structural details is presented. While traditionally constant stress concentration factors
are adopted, it is proposed here to use time-varying stress concentration factors, which
result from the progress of corrosion in the structure. Three-dimensional ? nite-element
models are adopted to obtain the detailed stress distribution at different times. Linear
and nonlinear models of the effects of corrosion wastage on the plate thickness reduction
are considered and stress concentration factors and fatigue damage are calculated as
a function of time. It is concluded that the stress concentration factors have a nonlinear
dependency with the time and this leads to a signi? cant difference of the fatigue damage
of structural components subjected to corrosion as compared with the traditional
predictions.
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