Finite element study of residual ultimate strength of a double hull oil tanker with simplified collision damage and subjected to bi-axial bending

Parunov, Joško; Rudan, Smiljko; Gledić, Ivana; Primorac, Branka Bužančić

doi:10.1080/17445302.2018.1425520

Cited by 7 publications

(3 citation statements)

References 15 publications

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“…To extend the fitting range, the samples are described in polar coordinates, and the fitting function is r = p T (θ)α(θ), (10) where r is the distance between the sample and the origin and θ is the angle between the point and the positive direction of the x-axis at the origin.…”

Section: The Moving Least-squares Methodsmentioning

confidence: 99%

“…Yao et al [9] applied a simplified progressive collapse method to study the longitudinal strength of the bulk carrier under bi-axis bending moments. Parunov et al [10] investigated the longitudinal strength of a damaged tanker under combined bending moments with the FEM, and the relationship between the damage size and the longitudinal strength was discussed. Paik et al [11,12] compared the longitudinal strength of unstiffened and stiffened plates under combined loads.…”

Section: Introductionmentioning

confidence: 99%

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Methods for Fitting the Limit State Function of the Residual Strength of Damaged Ships

Zhu

Ren

Wang

et al. 2022

JMSE

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The limit state function is important for the assessment of the longitudinal strength of damaged ships under combined bending moments in severe waves. As the limit state function cannot be obtained directly, the common approach is to calculate the results for the residual strength and approximate the limit state function by fitting, for which various methods have been proposed. In this study, four commonly used fitting methods are investigated: namely, the least-squares method, the moving least-squares method, the radial basis function neural network method, and the weighted piecewise fitting method. These fitting methods are adopted to fit the limit state functions of four typically sample distribution models as well as a damaged tanker and damaged bulk carrier. The residual strength of a damaged ship is obtained by an improved Smith method that accounts for the rotation of the neutral axis. Analysis of the results shows the accuracy of the linear least-squares method and nonlinear least-squares method, which are most commonly used by researchers, is relatively poor, while the weighted piecewise fitting method is the better choice for all investigated combined-bending conditions.

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Section: The Moving Least-squares Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Methods for Fitting the Limit State Function of the Residual Strength of Damaged Ships

Zhu

Ren

Wang

et al. 2022

JMSE

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“…Numerous studies have also been presented performing finite element analyses to estimate the residual structural capacity of the ship hull girders by Ehlers et al (2013); Kim et al (2013); Yamada (2014); Tekgoz et al (2015cTekgoz et al ( , 2015aTekgoz et al ( , 2015b; Parunov et al (2018); Tekgoz et al (2018b), and Corak and Parunov (2019).…”

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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Ultimate limit state analysis of a double-hull tanker subjected to biaxial bending in intact and collision-damaged conditions

et al. 2020

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Finite element study of residual ultimate strength of a double hull oil tanker with simplified collision damage and subjected to bi-axial bending

Cited by 7 publications

References 15 publications

Methods for Fitting the Limit State Function of the Residual Strength of Damaged Ships

Methods for Fitting the Limit State Function of the Residual Strength of Damaged Ships

Review of Ultimate Strength Assessment of Ageing and Damaged Ship Structures

Ultimate limit state analysis of a double-hull tanker subjected to biaxial bending in intact and collision-damaged conditions

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