Collapse Strength of Intact Ship Structures

Tekgoz, M.; Garbatov, Y.

doi:10.3390/jmse9101079

Cited by 4 publications

(2 citation statements)

References 113 publications

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“…The ultimate structural capacity assessment, particularly of the longitudinal strength, is crucial to ensure the safety of ships, crews, the marine environment, and the cargoes carried. A review of the references dealing with the collapse strength of the plates, stiffened panels and the entire hull is provided in [6]. The main contributions of the paper are the conclusions and suggestions about potential future research in the field.…”

Section: Paper Detailsmentioning

confidence: 99%

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Ship Structures

Parunov

Garbatov

2022

JMSE

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Section: Paper Detailsmentioning

confidence: 99%

“…The ULS may be associated with the structural failure of different components of ship structures, such as the plates and stiffened panels, or to the whole ship hull girder. Four studies are dedicated to different aspects of the ultimate strength of ship structures [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Ship Structures

Parunov

Garbatov

2022

JMSE

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Investigation of Functionality of Vehicle Crumple Zones Recovered after a Traffic Accident

et al. 2023

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It is fairly common for a used vehicle to have a history of damage related to traffic accidents. Post-accident repair of a vehicle is associated with both technical and economic challenges. Safe operation is mentioned primarily in the technical requirements that restrict further use of the vehicle. Here, forecasting the behaviour of the restored safety elements during another traffic accident should be addressed from the theoretical perspective. During a collision, the longitudinal members lose local stability due to the compressive impact load and partially absorb the impact energy due to the plastic deformations taking place during buckling. Recent research has placed a considerable focus on the analysis of this process, and guidelines have been developed for the design of these elements. However, the accumulated data on the effect of potential operational damages and the behaviour of the damaged elements during a traffic accident are insufficient. Moreover, no theoretical models have been developed, and the experimental investigations are insufficient. Investigating changes in the properties of elements of the crumple zone by using materials of different mechanical characteristics or changing the geometry is the essential part of this paper and forms the basis for the study of key deformation properties of the elements. This study designed numerical models allowing for forecasting of the longitudinal member and other structural elements of the vehicle in case of collision with an obstacle. The methodology was designed to forecast the amount of energy absorbed by the thin-walled sections used in the vehicle safety cage and the course of deformation under impact loads that caused stability loss. The effect of potential damages, such as geometric deviations and changes in the characteristics of materials and fabricated joints, was identified on the deformation of the restored safety elements.

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Effect of Corrosion-Induced Structural Degradation on the Ultimate Strength of a High-Tensile-Steel Ship Hull

Momčilović,

Ilić,

Kalajdžić

et al. 2024

JMSE

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Standard structural assessments of ship hulls include the evaluation of the elastic structural response. Elastic analysis neglects extreme and unpredicted loadings, which can produce catastrophic outcomes, such as the loss of the ship’s ultimate strength. Moreover, hull elements are considered unaffected by age-related degradation. Therefore, this study models and quantifies the effect of corrosion-induced structural degradation on the ultimate strength of a high-tensile-steel (HTS) cargo ship using progressive collapse and nonlinear finite element methods. Uniform and pitting corrosion are modeled through selected scenarios, which hull elements might encounter during exploitation, producing a total of 148 calculation models. The findings show that corrosion-induced degradation can significantly decrease the ultimate strength of the hull (up to 30% for the most severe scenarios assessed). Furthermore, ultimate strength decreases almost proportionally to the amount of wastage considered. It was found that stiffener corrosion has a significant effect on the total ultimate strength. This study’s aim is to emphasize the vast importance of including ultimate strength along with ageing effects in industry-standard structural assessments of large HTS ship structures, designed to last for several decades whilst exposed to excessive and unpredicted bending moments.

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Collapse Strength of Intact Ship Structures

Cited by 4 publications

References 113 publications

Ship Structures

Ship Structures

Investigation of Functionality of Vehicle Crumple Zones Recovered after a Traffic Accident

Effect of Corrosion-Induced Structural Degradation on the Ultimate Strength of a High-Tensile-Steel Ship Hull

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