Maximum Load Carrying Capacity Estimation of The Ship and Offshore Structures by Progressive Collapse Approach

Ölmez, Hasan; Bayraktarkatal, Ertekin

doi:10.1515/pomr-2016-0029

Cited by 3 publications

(2 citation statements)

References 6 publications

(15 reference statements)

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“…The ultimate strength of intact structures has been studied for many years, and some recent studies are presented in [3], [4]. The impact of corrosion on the load-carrying capacity of different ship structural elements was studied, both experimentally and numerically.…”

Section: Introductionmentioning

confidence: 99%

Ultimate Compressive Strength Assessment of Uncleaned and Cleaned Corroded Plates with Locked Crack

Woloszyk

Garbatov

2021

Polish Maritime Research

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The work presented here investigates the structural response of cleaned corroded plates, subjected to compressive load in the presence of a locked crack, where the change of mechanical properties as a result of corrosion development and the cleaning process is also accounted for. A Finite Element model for assessing the compressive strength, considering geometric and material nonlinearities, is developed, and the analysed plates are compared with the available experimental data. An experimental design plan is generated using the Design of Experiments techniques, which quantifies the influence of the governing variables and their interactions with respect to the plate’s ultimate compressive strength. With a limited number of observations, the most significant effects are identified. The corrosion degradation is revealed to be the most crucial effect leading to an effective strength reduction. It was found that, in the case of a corroded plate with a locked crack subjected to a compressive load, the most severe case is when the crack is transversely oriented. The strength reduction is slightly lower than when the corrosion degradation and the presence of a crack are considered to be a simple summation of these two effects but acting separately. The outcome of the analysis is the development of several empirical formulations that allow a fast estimation of the ultimate strength of a corroded plate, subjected to compressive load in the presence of a locked crack, accounting for different cleaning.

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Section: Introductionmentioning

confidence: 99%

Ultimate Compressive Strength Assessment of Uncleaned and Cleaned Corroded Plates with Locked Crack

Woloszyk

Garbatov

2021

Polish Maritime Research

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“…To solve the current situation and level the possible risks, shipping companies are increasingly using specialized heavy lift vessels. This circumstance is caused, on the one hand, by cost estimates due to the transportation of oversized cargo, and, on the other hand, by the possibility of using high-capacity onboard cranes [2].…”

Section: Introductionmentioning

confidence: 99%

Development of control model for loading operations on heavy lift vessels based on inverse algorithm

Solovey¹,

Ben²,

Dudchenko³

et al. 2020

EEJET

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The aim of the work is to develop a method for optimal control of handling operations with heavy lift cargo on sea vessels. Based on the review of scientific research in the field of loading heavy lift cargo, priority directions for improving the automated control systems for cargo handling operations on ships have been determined. Within a scientific hypothesis, it was proposed to synchronize solutions to the problem of ship propulsion control and automated control of heavy lift onboard cranes in order to improve the accuracy of loading processes. The paper analyzes the dynamic model of the "vessel-crane-cargo" system and the criteria of optimality in the problem of ship regulation-stabilization under minimization of loading time. An inverse loading algorithm has been developed, based on the principles of the loading control optimization with limiting the choice of motion by linear displacements and turns of the vessel. When executing the inverse algorithm, restrictions associated with the minimization of heeling moments in the "vessel-crane-cargo" system and restrictions associated with the maximum and minimum boom outreach are applied. The study determined the technical feasibility of achieving invariance in the cargo stabilization system with the inverse loading algorithm on heavy lift vessels. On the basis of the proposed method, simulation modeling of the ship loading process was carried out on simulators at the Kherson State Maritime Academy. The simulation modeling has shown that the use of the inverse algorithm will reduce the time of cargo operations by 50-70 percent and, as a result, reduce the risk of emergencies when loading the ship. It was also determined that the use of the inverse algorithm is appropriate for cargo of more than 100 tons

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A new method to estimate ultimate strength of stiffened panels under longitudinal thrust based on analytical formulas

et al. 2018

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Maximum Load Carrying Capacity Estimation of The Ship and Offshore Structures by Progressive Collapse Approach

Abstract: ABSTRACT

Cited by 3 publications

References 6 publications

Ultimate Compressive Strength Assessment of Uncleaned and Cleaned Corroded Plates with Locked Crack

Ultimate Compressive Strength Assessment of Uncleaned and Cleaned Corroded Plates with Locked Crack

Development of control model for loading operations on heavy lift vessels based on inverse algorithm

A new method to estimate ultimate strength of stiffened panels under longitudinal thrust based on analytical formulas

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