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Optimization of corrugated shell plating for marine structures

Jonas Ringsberg (Institutionen för sjöfart och marin teknik, Fartygsdesign) ; Hüseyin Sağlam (Institutionen för sjöfart och marin teknik, Fartygsdesign) ; Md Asaduzzaman Sarder (Institutionen för sjöfart och marin teknik, Fartygsdesign) ; Anders Ulfvarson (Institutionen för sjöfart och marin teknik, Fartygsdesign)
Proceedings of the ASME Thirtieth International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2011) in Rotterdam, the Netherlands, June 19-24, 2011 Vol. 1 (2011), p. 769-778 (OMAE2011-50216).
[Konferensbidrag, refereegranskat]

The structural weight of a shell-plated structure can be reduced in numerous ways. The current investigation presents an example of innovative lightweight design of the pontoon of an offshore platform by utilization of corrugated structure. The corrugated shell plating is compared with a conventional stiffened panel with respect to strength, weight and cost. For this purpose, an optimization methodology is developed for shell-plated marine structures. The procedure enables the analysis/comparison of various (structural) solutions with regard to strength characteristics, weight and cost. Here, strength characteristics include ultimate tensile strength, buckling stability and fatigue life analyses. Linear elastic finite element analyses are carried out to generate input to the structural characteristics studies, which involve several design criteria according to classification rules. The results show that in competition with the traditional stiffened panel, the corrugated shell-plated structure can be used as the more lightweight design solution. It can be manufactured and installed at a lower cost. Finally, the structural strength characteristics analyses show that, when designed properly, classification rules are fulfilled without compromising with the safety margins.

Nyckelord: optimization, corrugated panel, fatigue, buckling, ultimate limit state, lightweight design, cost, finite element analysis, parametric study

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Denna post skapades 2011-06-19. Senast ändrad 2012-02-16.
CPL Pubid: 141950


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Institutioner (Chalmers)

Institutionen för sjöfart och marin teknik, Fartygsdesign (2007-2011)


Hållbar utveckling
Innovation och entreprenörskap (nyttiggörande)
Övrig teknisk mekanik

Chalmers infrastruktur