Comparison of computational methods for evaluation of wave-load-induced fatigue damage accumulation in a containership structure detail
Paper i proceeding, 2013

In this study different methods, from linear strip theory to more complex non-linear panel methods, are employed to estimate the hydrodynamic loads on a 4400TEU container ship. Subsequently, the structural stresses are computed using the finite element method and engineering beam theory. The calculated stresses are used to evaluate the fatigue damage in a detail of the ship structure using the rainflow counting method and different spectral methods. It is concluded that, for the studied part of the structure with governing uniaxial stresses due to wave loading, disregarding vibrational responses, it is sufficient to evaluate the fatigue damage using a spectral method, i.e. the so-called narrow band approximation, without any compensation.

Structural stresses

FEM

Rainflow counting

Engineering beam theory

Strip theory

Panel method

Spectral fatigue methods

Direct calculation

Fatigue damage

Författare

Viktor Ogeman

Chalmers, Sjöfart och marin teknik, Marine Design

Wengang Mao

Chalmers, Sjöfart och marin teknik, Marine Design

Jonas Ringsberg

Chalmers, Sjöfart och marin teknik, Marine Design

Proceedings of the Fifth International Conference on Computational Methods in Marine Engineering (MARINE 2013) in Hamburg, Germany, May 29-31, 2013 (Editors B. Brinkmann and P. Wriggers), International Center for Numerical Methods in Engineering (CIMNE), Barcelona, Spain

342-353

Ämneskategorier

Maskinteknik

Farkostteknik

Sannolikhetsteori och statistik

Drivkrafter

Hållbar utveckling

Styrkeområden

Transport

Fundament

Grundläggande vetenskaper

ISBN

978-84-941407-4-7