Behavior of thin-walled circular hollow section tubes subjected to bending

Guo, Lanhui; Yang, Shu-Chun; Jiao, Hui

doi:10.1016/j.tws.2013.08.014

Cited by 105 publications

(42 citation statements)

References 13 publications

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“…It was also found that the ultimate strength of a shell with a cutout on the compression side was less than for a cutout on the tension side, and the ultimate strength increased when a cutout was close to the end of the clamped shell. Guo et al (2013) found that an increase in the D/t ratio resulted in a more pronounced local buckling phenomenon, with the stiffeners increasing the loadcarrying capacity while improving the ductility.…”

Section: Literature Reviewmentioning

confidence: 99%

“…For a couple of decades, a number of studies were conducted to provide buckling analyses of circular cylindrical shells (Brazier 1927;Reissner 1961;Seide & Weingarten 1961;Fabian 1977;Gellin 1980) with cutouts under axial compression (Schenk & Schuёller 2007;Shariati &Rokhi 2010;Ghazijahani et al 2015) and pure bending (Yeh et al 1999;Dimopoulos & Gantes 2012, 2015Guo et al 2013;.…”

Section: Introductionmentioning

confidence: 99%

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Ultimate strength of cylindrical shells with cutouts

Lee

Sahin

Rigo

et al. 2017

Ships and Offshore Structures

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KEYWORDSCutouts; ultimate strength; wind turbine tower; parameters of influence; nonlinear finite element method ABSTRACT Cutouts -perforations that are often made in wind turbine towers to allow access or passage -can also reduce the towers' ultimate strength. Thus, cutouts may need to be included in the ultimate strength formulations for wind turbine towers as an influential parameter, where significant. The aims of this study are to examine the effects of cutouts on the ultimate-strength characteristics of wind turbine towers and to propose empirical formulae to predict the reduced ultimate strength under axial compression and pure bending. The structural features of cutouts and towers in real wind turbines are investigated, and the effects of different design variables -such as shape, location, aspect ratio, column slenderness ratio, and column aspect ratio -on the ultimate-strength behaviour are described. The ultimate strengths of the towers are computed using elastic-plastic large-deflection finite element analyses. Empirical formulae accommodating a whole range of actual dimensional characteristics of cutouts and towers are derived and proposed. The findings of this research and the proposed formulae have the potential to enhance the structural design and safety assessment of wind turbine towers.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ultimate strength of cylindrical shells with cutouts

Lee

Sahin

Rigo

et al. 2017

Ships and Offshore Structures

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“…Local buckling appears when the bending ultimate moment reaches a critical value, and thereafter the bending moment declines and bending instability occurs. For a rigid-perfectly plastic pipe with the original radius R, wall thickness t and length l, when it is subjected to bending load and enters into the fully plastic state, the pure bending moment due to cross-sectional ovalization can be written as [23,24] in which a i and b i are the lengths of the internal longer semi-axis and shorter semi-axis. a and b are the lengths of the external longer semi-axis and shorter semi-axis, a = (a i + t), b = b i + t), respectively.…”

Section: New Expression For Apparent Strain Of a Pipe At Plastic-bendmentioning

confidence: 99%

Apparent strain of a pipe at plastic bending buckling state

Zheng

Chen

et al. 2015

J Braz. Soc. Mech. Sci. Eng.

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“…Local buckling appears when the bending ultimate moment reaches to a critical value, and thereafter bending moment declines and the bending instability occurs. For a rigid -perfectly plastic pipe with the original radius R, wall thickness , and length , when it is subjected bending load and enters into fully plastic state, the pure bending moment due to cross section ovalization could be written as [13,14] …”

Section: Strain Energy Rate Corresponding To Pure Bendingmentioning

confidence: 99%

An estimation of critical buckling strain for pipe subjected plastic bending

Ji¹,

Zheng

Chen

et al. 2014

Open Engineering

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An approach for estimating critical buckling strain of pipe subjected plastic bending is established in the present paper. A rigid -perfectly plastic material model and cross section ovalization of pipe during bending are employed for the approach. The energy rates of the ovalised pipe bending and the cross section ovalising are proposed firstly. Furthermore, these energy rates are combined to perform the buckling analysis of pipe bending, an estimation formula of critical buckling strain for pipe subjected plastic bending is proposed. The predicting result of the new critical buckling strain formula is compared with the available experimental data, it shows that the formula is valid. Keywords

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Behavior of thin-walled circular hollow section tubes subjected to bending

Cited by 105 publications

References 13 publications

Ultimate strength of cylindrical shells with cutouts

Ultimate strength of cylindrical shells with cutouts

Apparent strain of a pipe at plastic bending buckling state

An estimation of critical buckling strain for pipe subjected plastic bending

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