A statistical investigation of time-variant hull girder strength of aging ships and coating life

Wang, Ge; Lee, AiKuo; Ivanov, Lyuben D.; Lynch, Thomas J.; Serratella, Chris; Basu, Roger

doi:10.1016/j.marstruc.2007.10.002

Cited by 36 publications

(7 citation statements)

References 12 publications

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“…Reliability-based studies have also been published considering the effect of corrosion or corrosion and fatigue on the ultimate hull strength (Guedes Soares and Garbatov (1996b, 1998b, 1999a; Akpan et al (2002); Hu et al (2004); Sun and Guedes Soares (2006); Guo et al (2008); Wang et al (2008); Garbatov andGuedes Soares (2009b, 2011) When the structural damages occur in the ship, the principle plane changes. Therefore, the external load will not only be reported on the horizontal principle bending plane but also on the vertical principle bending plane due to the asymmetry created by the damage.…”

Section: Damaged Ship Structuresmentioning

confidence: 99%

Review of Ultimate Strength Assessment of Ageing and Damaged Ship Structures

Tekgoz

Garbatov

Soares

2020

J. Marine. Sci. Appl.

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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.

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Section: Damaged Ship Structuresmentioning

confidence: 99%

Review of Ultimate Strength Assessment of Ageing and Damaged Ship Structures

Tekgoz

Garbatov

Soares

2020

J. Marine. Sci. Appl.

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“…The clear consequence of the reduction of HGSM is that the global hull girder stresses are increasing. Therefore, the structural capacity of the main deck decreases as a function of time, while the longitudinal hull girder stresses increase [21].…”

Section: Impact Of Corrosion Degradation On the Collapse Strengthmentioning

confidence: 99%

Aging Effects on Ship Structural Integrity

Jurišić¹,

Parunov

Garbatov

2017

Brod

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SummaryThe most important degradation effects of ship structures are corrosion and fatigue cracks. Both of these aging effects have clear consequences of increasing the level of stresses and degrading the strength of ship structures for almost all relevant failure modes. This study presents an overview of some recent developments on the aging effects on the ship structural integrity. The analysis of the thickness measurements has been undertaken to improve understanding of the corrosion degradation phenomena and to develop prediction models of aging effects suitable for practical applications in the ship structural design and analysis. The study also deals with the application of the non-linear finite element analysis as a suitable tool for a collapse assessment of uniaxially loaded plates and stiffened panels of ship structures weakened by non-uniform corrosion degradation and fatigue cracks. Experimental studies have also been reviewed to better understand the recently found degradation of mechanical properties of corroded steel, while theoretical calculations have been performed to evaluate consequences of such degradation on the ship structural integrity.

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“…Consequently, stresses applied to deck/bottom panels increase. Based on a dataset of as-gauged hull structures, a statistical study for the loss of HGSM was performed by Wang et al (2008). This dataset demonstrated a high variation of HGSM over time, and Weibull distribution was assumed to represent the time-variant reduction factor.…”

Section: Time-invariant Limit State Functionsmentioning

confidence: 99%

Reliability analysis of novel stiffened panels using Monte Carlo simulation

Leheta

Elhanafi

Badran

2016

Ships and Offshore Structures

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The present study aims to perform reliability analyses using Monte Carlo simulation to compute and compare the time-invariant reliability indices of stiffened panels with either conventional T-stiffeners or novel Y (Hat + Tee/Angle) stiffeners profiles in a double hull oil tanker's bottom and deck panels under axial compressive loads. The ultimate strength and the applied axial compressive stress formulations used in the limit state functions are obtained based on the International Association of Classification Societies-Common Structural Rules for oil tankers considering the following failure modes: unstiffened plate buckling, stiffener beam-column buckling, and stiffener torsional/flexural buckling (tripping). With the Y-stiffeners profile, a considerable improvement in the panels' reliability index throughout the vessel lifetime is achieved.

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A statistical investigation of time-variant hull girder strength of aging ships and coating life

Cited by 36 publications

References 12 publications

Review of Ultimate Strength Assessment of Ageing and Damaged Ship Structures

Review of Ultimate Strength Assessment of Ageing and Damaged Ship Structures

Aging Effects on Ship Structural Integrity

Reliability analysis of novel stiffened panels using Monte Carlo simulation

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