A Numerical Analysis for Stress Concentration of Openings in Offshore Tubular Steel Tower under Design Loading Condition

Reyno, Hannah; Park, Jong Sup; Kang, Sung-Yong; Kang, Youngjong

doi:10.5762/kais.2015.16.2.1516

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…Some researchers investigated the stress distribution on offshore wind turbines and support structures. For example, Reyno et al [10] did research on the stress concentration in the door opening under design loading conditions. According to the results, the average value of the stress concentration is 1.45, while the amount of reduction achieved by reinforcement was 78%.…”

Section: Introductionmentioning

confidence: 99%

Stress Distribution on the Preliminary Structural Design of the CENTEC-TLP under Still Water and Wave-Induced Loads

Zavvar

Abdelwahab

Uzunoğlu

et al. 2023

JMSE

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An assessment is made of the stress distribution and the hydrodynamic response of the preliminary structural design of the tension leg platform of a 10 MW wind turbine. The platform supporting a 10 MW turbine is modelled and analysed by the finite element method. The stress distribution of the platform is determined in still water with the turbine at above-rated conditions, and the response of the tension leg platform is estimated in the time domain. The results of the time domain analysis show reasonable agreement between the present results and the available data. To check the design stiffener dimensions, span, and spacing against stress distribution, classification societies’ recommendations are used. The results of the stress distribution analysis indicate that the critical locations of the platform are the interaction of the lower columns with the upper columns and the connection of the tower of the turbine.

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Section: Introductionmentioning

confidence: 99%

Stress Distribution on the Preliminary Structural Design of the CENTEC-TLP under Still Water and Wave-Induced Loads

Zavvar

Abdelwahab

Uzunoğlu

et al. 2023

JMSE

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“…Various studies on these structural defects have been conducted. Guz et al [8], Zirka et al [9], Golling [10], and Reyno et al [11] conducted stress concentration tests of cylindrical shells considering the opening. Tennyson [12], Starnes [13], Jullien et al [14], Shariati et al [15,16], Ghazijahani et al [17], and Alsalah et al [18] analyzed the effect on the opening of a cylindrical shell under axial load but did not deal with the effect of reinforcement using a surrounding stiffener.…”

Section: Introductionmentioning

confidence: 99%

Structural Behavior of Large-Diameter Cylindrical Shell with Stiffened Opening

Kang

Won

Park

et al. 2021

Metals

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In recent years, there has been a growing demand for renewable energy that is free of power generation by products to address the global climate and resource limitation crises. Wind power generation is maximizing efficiency through constant research and development, and as the use of large capacity turbines increases, the scale of supporting structure also increases. The structural maintenance of hollow towers, the supporting structure of wind turbines, requires the installation of an opening through which workers can access the tower to check corrosion, cracks, and damage to the tower body. However, these access points can affect the buckling strength of the tower structures due to section loss. In this study, the effects of the opening on the structural stability and ultimate strength of a large diameter cylindrical shell, which could be used as a wind turbine supporting tower structure, were studied through elastic buckling and nonlinear analyses. Based on the analytical results, the effects of the thickness of a collar stiffener around the opening on the structure’s ultimate strength were investigated. The results were compared to the design criteria, and through regression analysis, an effective equation to determine the collar stiffener’s thickness for large diameter cylindrical shells was proposed based on an opening that satisfied the design strength criteria.

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A Numerical Analysis for Stress Concentration of Openings in Offshore Tubular Steel Tower under Design Loading Condition

Cited by 2 publications

References 5 publications

Stress Distribution on the Preliminary Structural Design of the CENTEC-TLP under Still Water and Wave-Induced Loads

Stress Distribution on the Preliminary Structural Design of the CENTEC-TLP under Still Water and Wave-Induced Loads

Structural Behavior of Large-Diameter Cylindrical Shell with Stiffened Opening

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