Performance assessment of the crashworthiness of corroded ship hulls

• 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.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Materialteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Materials Engineering (hsv//eng)

NATURVETENSKAP  -- Matematik -- Beräkningsmatematik (hsv//swe)

NATURAL SCIENCES  -- Mathematics -- Computational Mathematics (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Farkostteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Vehicle Engineering (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Teknisk mekanik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Applied Mechanics (hsv//eng)

Nyckelord

damage opening

corrosion

crashworthiness

strain rate

ship collision

Publikations- och innehållstyp

kon (ämneskategori)

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