Review of Ultimate Strength Assessment of Ageing and Damaged Ship Structures
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RESEARCH ARTICLE
Review of Ultimate Strength Assessment of Ageing and Damaged Ship Structures M. Tekgoz 1 & Y. Garbatov 1 & C. Guedes Soares 1 Received: 2 July 2020 / Accepted: 25 September 2020 # The Author(s) 2020
Abstract The objective of this work is to provide an overview of the ultimate strength assessment of ageing and damaged ship structures in the last decades. Particular attention is paid to the ultimate strength of plates, stiffened panels, box girders, and entire ship hull structures subjected to corrosion degradation, fatigue cracking, and mechanical damage caused by accidental loading or impact. A discussion on the effect of the cyclic load on the plate rigidity, re-yielding, and ultimate load capacity on the ship hull girder is also part of the present study. Finally, some conclusions and discussions about potential future work are provided, identifying that more studies about the impact of corrosion degradation on the structural behaviour of the stiffened panels and the overall hull girders are needed. Studies related to the dynamic collapse behaviour of corroded and damaged ship structures under time-variant load also requires additional attention. Keywords Marine corrosion . Damage . Ultimate strength . Finite element method
1 Introduction Ship structures are most commonly made of steel, which renders them vulnerable to the corrosive environment leading to thickness loss and/or pitting over the years. In addition to the thickness loss due to the corrosion, the ship structures may experience structural damages throughout the service life Article Highlights • An overview of the ultimate strength assessment of ageing and damaged ship structures performed in the last decades is presented. • Attention is paid to the ultimate strength of plates, stiffened panels, box girders, and entire ship hull structures subjected to corrosion degradation, fatigue cracking, and mechanical damage caused by accidental loading or impact. • The impact of the cyclic load on the plate rigidity, re-yielding, and ultimate load capacity on the ship hull girder is also discussed. • Conclusions about potential future work are provided, identifying that more studies about the impact of corrosion degradation and the dynamic collapse of corroded and damaged ship structures under time-variant load require additional attention. * Y. Garbatov [email protected] 1
Centre for Marine Technology and Ocean Engineering (CENTEC), Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
ranging from the ship to ship collision or grounding related damages (Liu et al. 2018a, b) to the ship motion-related cracks or mishandled cargo operations. The ageing-related thickness losses and structural damages may lead to the load capacity reduction, structural integrity breaches, and the potential increase in the working load acting on the ships. There are several examples of ship structures that are thought to be structurally deficient, which resulted in sinking during heavy weather, causing
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