Author(s)

M. Bogdaniuk

Abstract

Examples of fatigue lives calculations of typical ship hull structures welded elements such as transverse butt weld connection of the plating and cruciform joint with fillet welds are presented in this paper. The calculations were performed applying S-N curves and fatigue crack propagation analysis. Long term dynamic stresses distribution in form of Weibull distribution, S-N classification recommended in literature and available parametric formulae for calculating stress intensity factors were applied. Some conclusions and recommendations to apply the fatigue crack propagation analysis method successfully to ship structures are given. Symbols #0 - initial depth of crack; D - fatigue damage; K

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