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A comparative study of fatigue assessment of a container ship structure using various direct calculation approaches

Zhiyuan Li (Institutionen för sjöfart och marin teknik, Marine Design) ; Wengang Mao (Institutionen för sjöfart och marin teknik, Marine Design) ; Jonas Ringsberg (Institutionen för sjöfart och marin teknik, Marine Design) ; Erland Johnson ; Gaute Storhaug
Proceedings of the International Conference on Maritime Technology (ICMT2012) in Harbin, Heilongjiang, P. R. China, June 25-28, 2012 p. 405-409 (No. H95). (2012)
[Konferensbidrag, refereegranskat]

Today, it is common practice to carry out fatigue assessments of ship structures using direct calculation procedures. Many numerical codes are available for these types of analyses. They could yield different values in a fatigue life prediction due to the different degrees of complexity as well as the large number of uncertainties in the computation of the ship’s response. In this investigation, a comparative study is carried out on a Panamax container ship in oblique waves using different typical direct calculation methods. The results of fatigue life prediction using these methods are compared with results obtained from full-scale measurements. It is found that the nonlinear time-domain method shows the best agreement with the full-scale measurements, and therefore, it is recommended to be used in fatigue predictions.

Nyckelord: Direct calculation, fatigue, full-scale measurement, oblique wave, ship structure

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Denna post skapades 2012-07-10. Senast ändrad 2012-07-19.
CPL Pubid: 160334


Institutioner (Chalmers)

Institutionen för sjöfart och marin teknik, Marine Design (2012-2014)


Hållbar utveckling
Innovation och entreprenörskap (nyttiggörande)

Chalmers infrastruktur