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Performance assessment of the crashworthiness of corroded ship hulls

Jonas Ringsberg ( Institutionen för mekanik och maritima vetenskaper, Marin teknik) ; Zhiyuan Li ( Institutionen för mekanik och maritima vetenskaper, Marin teknik) ; Erland Johnson
Progress in the Analysis and Design of Marine Structures - Proceedings of the Sixth International Conference on Marine Structures (MARSTRUCT2017), Lisbon, Portugal, May 8-10, (Editors C. Guedes Soares and Y. Garbatov). p. 523-531. (2017)
[Konferensbidrag, refereegranskat]

The effects of ship-ship collision damage and progressive deterioration due to corrosion of a struck ship’s hull are studied numerically in a crashworthiness assessment. The performance of a struck ship’s hull is quantified in terms of the shape and size of the damage opening in the side-shell structure, and the division of energy absorption between the striking and struck ships. Results from finite element analyses are presented where several factors are varied in a parametric study: ship speed, collision angle, bow stiffness, material strain rate effect, friction characteristics of the outer side-shell of the struck ship, and influence from corrosion. The results show that the combined effects of a sudden collision load and corrosion lead to a damage opening size of the struck ship which is around 25% larger compared to the reference case with full corrosion margin and with non-corroded friction characteristics of the ballast water tank surface areas.

Nyckelord: corrosion; crashworthiness; damage opening; ship collision; strain rate

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Denna post skapades 2017-05-24. Senast ändrad 2017-06-28.
CPL Pubid: 249475