Title: Influence of wave-induced ship hull vibrations on fatigue damage
Abstract: Ship springing is the resonant response of a ship to the hydrodynamic excitation due to incident waves. It could increase the fatigue damage of the ship and reduce the life of hers. In this paper, the springing analysis is performed to evaluate the vertical springing response of the ship. The problem of springing response is formulated based on hydroelastic theory. The strip method is employed to calculate the hydrodynamic forces and moments on the hull. The hull is modeled as a Timoshenko beam that accounts for the rotary inertia and shear deformation. Fatigue analysis is also performed to evaluate the fatigue life of the ship including springing effect. The approach of Wirsching is applied for the wide band bi-modal stress spectra induced from springing. Applications to recent ships are carried out and the influence of springing response on the fatigue damage is discussed.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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Cited By Count: 1
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