Effects of openings of the buckling of cylindrical shells subjected to axial compression

Jullien, Jean‐François; Limam, Ali

doi:10.1016/s0263-8231(98)00003-2

Cited by 56 publications

(48 citation statements)

References 3 publications

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“…On the other hand, the effect of an opening in the wall of thin-walled cylinders has been observed previously by other researches such as Jullien and Limam [7] about the influence of various shapes, sizes and locations of opening on the compressive load capacity of cylinders. In another work Han et al [8] using experimental observations and numerical simulations including the nonlinear behavior of the material investigated the effect of created openings in the aluminum cylinders with various L/D ratios.…”

Section: Introductionsupporting

confidence: 55%

The study of ultimate strength in notched cylinders subjected to axial compression

Kabir

Nazari

2011

Journal of Constructional Steel Research

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Section: Introductionsupporting

confidence: 55%

The study of ultimate strength in notched cylinders subjected to axial compression

Kabir

Nazari

2011

Journal of Constructional Steel Research

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“…For axial compression, Tennyson (1968) experimentally observed membrane stress distributions and isoclinic patterns around the edges of cutouts using photoelastic shells. Jullien and Limam (1998) found that the buckling strength is sensitive to a cutout's angle or circumferential size, based on parametric studies of its shape (square, rectangular, circular) and dimensions (axial and circumferential sizes, diameter). Furthermore, they pointed out the importance of initial imperfections for numerical simulations.…”

Section: Literature Reviewmentioning

confidence: 99%

“…The wind turbine is modelled on the result of the quasi-static material test of mild steel grade A, as shown in Figure 6. As in previous studies (Jullien & Limam 1998;Schenk & Schuёller 2007;, the effect of initial imperfection is properly applied. The maximum magnitude of initial deflection w o is assumed to be 30% of the thickness of the wind turbine tower; that is, w o = 0.3t.…”

Section: Finite-element Modelmentioning

confidence: 99%

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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“…Therefore, significant performance deterioration of the perforated cylindrical shells can be expected under axial compressive loading. Few studies investigated the influence of perforation on the axial compressive behaviour of isotropic cylindrical shells [1][2][3][4][5][6][7][8][9]. Gupta et al [4] performed axial compression tests on perforated mild steel and aluminium round tubes.…”

Section: Introductionmentioning

confidence: 99%

Behaviour of perforated GFRP tubes under axial compression

Wang

Sheikh

Hadi

2015

Thin-Walled Structures

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This study investigates the influences of various parameters on the behaviour of perforated Glass Fibre Reinforced Polymer (GFRP) tubes under axial compression. A total of 15 GFRP tubes with and without perforations were tested under axial compression. All the GFRP tubes were divided into two groups: 12 tubes with 89 mm outer diameter and 6 mm wall thickness and 3 tubes with 183 mm outer diameter and 8 mm wall thickness. The influences of hole diameter, vertical hole spacing, tube diameter, perforation pattern, transverse hole spacing, and hole reinforcement on the axial compressive behaviour of perforated GFRP tubes were experimentally investigated. Considerable decreases in the axial stiffness, axial critical load, and axial deformation capacity of perforated GFRP tubes have been observed. The hole diameter, tube diameter, perforation pattern, and transverse hole spacing significantly influence the axial compressive behaviour of perforated GFRP tubes. However, the influences of vertical hole spacing and hole reinforcement have been observed not significant. Design-oriented equations for the prediction of the axial stiffness, axial critical load and axial deformation capacity of perforated GFRP tubes under axial compression have been proposed. The proposed equations have been found to be in good agreement with experimental results and can be used for the reliable design of perforated GFRP tubes. Disciplines Engineering | Science and Technology Studies -------------------------------------------------------- Research Highlights 53Perforated GFRP tubes with multiple holes have been tested under axial compression. 54Influences of different parameters on behaviour of perforated GFRP are investigated. 55Design equations are developed to predict the capacity of perforated GFRP tubes.

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Effects of openings of the buckling of cylindrical shells subjected to axial compression

Cited by 56 publications

References 3 publications

The study of ultimate strength in notched cylinders subjected to axial compression

The study of ultimate strength in notched cylinders subjected to axial compression

Ultimate strength of cylindrical shells with cutouts

Behaviour of perforated GFRP tubes under axial compression

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