Fatigue damage assessment of container ships concerning wave-induced torsion
Paper i proceeding, 2010

The traditional method to assess fatigue damage of ship structures assumes moderate wave amplitudes and linear responses. This method can be questioned when applied on container ships that are characterized by large deck openings, because the low torsion rigidity of this type of ship makes it sensitive to oblique waves. In this paper, the 3D hydrodynamic code WASIM is used to simulate a 4400 TEU container ship operating in the North Atlantic Ocean. Nonlinear wave loads are utilized for direct calculation of the stress histories under severe sea states. The warping stress from wave-induced torsion is separated from the stress components from vertical and horizontal bending. The contribution to fatigue damage accumulation from warping stresses is evaluated. For comparison, the results from the numerical simulations and fatigue calculations are verified with full-scale measurements made on a similar type of container vessel.

fatigue

direct calculation

Container ship

torsion

non-linear wave loads

Författare

Zhiyuan Li

Fartygsdesign

Jonas Ringsberg

Fartygsdesign

Wengang Mao

Göteborgs universitet

Chalmers, Matematiska vetenskaper, matematisk statistik

Proceedings of the ASME 29th International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2010) in Shanghai, China, June 6-11, 2010

Vol. 2 151-158 (OMAE2010-20140)-

Ämneskategorier

Maskinteknik

Farkostteknik

Drivkrafter

Hållbar utveckling

Innovation och entreprenörskap

Styrkeområden

Transport

Materialvetenskap

Fundament

Grundläggande vetenskaper

DOI

10.1115/OMAE2010-20140

ISBN

978-0-7918-4910-1