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

FEM

Fatigue damage

Strip theory

Engineering beam theory

Spectral fatigue methods

Direct calculation

Structural stresses

Panel method

Rainflow counting

Author

Viktor Ogeman

Chalmers, Shipping and Marine Technology, Division of Marine Design

Wengang Mao

Chalmers, Shipping and Marine Technology, Division of Marine Design

Jonas Ringsberg

Chalmers, Shipping and Marine Technology, Division of Marine Design

Proceedings of The 5th International Conference on Computational Methods in Marine Engineering (MARINE 2013)

342-353

The 5th International Conference on Computational Methods in Marine Engineering (MARINE 2013)
Hamburg, Germany,

Chalmers Area of Advance Transport – funding 2013

Chalmers, 2013-01-01 -- 2013-12-31.

Subject Categories

Mechanical Engineering

Vehicle Engineering

Probability Theory and Statistics

Driving Forces

Sustainable development

Areas of Advance

Transport

Roots

Basic sciences

More information

Latest update

10/11/2018