Flexural Buckling of Elliptical Hollow Section Columns

Chan, Tak Ming; Gardner, Leroy

doi:10.1061/(asce)st.1943-541x.0000005

Cited by 87 publications

(62 citation statements)

References 22 publications

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“…As successfully employed in similar previous studies [2,5,6,8,18], the reduced integration 4-noded doubly curved general-purpose shell element S4R with finite membrane strains [32] has been employed in the present study. In order to minimize computational time while still generating accurate results, a mesh convergence study based on elastic eigenvalue buckling analyses was carried out.…”

Section: Numerical Modellingmentioning

confidence: 99%

“…Previous research into the structural response of oval and elliptical hollow sections has included analytical and numerical investigations of elastic buckling and post-buckling [1][2][3], experimentation and derivation of slenderness limits [4][5][6] and examination of shear [7] and flexural buckling [8] behaviour. The resistances of EHS under combined loading [9] and with concrete infill [10][11][12] have also been studied, as have a range of EHS connection types [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Flexural behaviour of stainless steel oval hollow sections

Theofanous

Chan

Gardner

2009

Thin-Walled Structures

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Section: Numerical Modellingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flexural behaviour of stainless steel oval hollow sections

Theofanous

Chan

Gardner

2009

Thin-Walled Structures

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Section: Element Type and Mesh Sizementioning

confidence: 99%

“…This element allows transverse shear deformation and can be used for thick or thin shell applications. It has been successfully used in previous studies for modelling hollow section columns and produced accurate results for compressive resistance and failure modes [26,27].Strain outputs from the models were found to be sensitive to mesh size. In order to improve computational efficiency, varying mesh densities were employed in different areas of the models.…”

mentioning

confidence: 99%

Cyclic testing and numerical modelling of carbon steel and stainless steel tubular bracing members

Nip

Gardner

Elghazouli

2010

Engineering Structures

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136

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Satisfactory behaviour of structures under severe seismic loading is usually largely dependent on the ability of key components to undergo significant inelastic deformations. In the case of concentrically braced frames, the critical elements are the diagonal bracing members which are expected to experience repeated cycles involving yielding in tension and member buckling in compression. The performance of bracing members depends on various factors, including local slenderness, global slenderness, material yield strength, section shape and end restraint [1]. Due to the difficulty in modelling the non-linearity and cyclic plasticity accurately, numerous experimental studies have been carried out to study the cyclic inelastic behaviour of bracing members.The interest of researchers in the early days was primarily in the load-displacement hysteretic response of the braces. Models were proposed to predict residual elongation at zero load, loss of compressive strength, the area under the hysteresis loops which represents the amount of energy dissipation, and other key characteristics of the hysteresis loops [2][3][4][5]. It was generally concluded [4,5] that global slenderness was the most important parameter influencing the hysteretic behaviour of braces. Slender members lost compressive resistance more rapidly than stocky members, resulting in fewer inelastic response cycles and lower amount of energy dissipation.More recently, attention has shifted to examination of the factors influencing the fracture life of bracing members. Through experimental testing, both global and local slenderness were found to be important factors in determining fracture life. Tang and Goel [6] proposed one of the first empirical equations for predicting the fracture life of bracing members, which suggests that fracture life is proportional to both the aspect ratio of the cross-section and the global member slenderness but inversely proportional to the square of the local slenderness. However, the validity of this prediction method is limited to bracing members in inverted V braced frames. Further developments [7][8][9] in the prediction of fracture life of brace members have utilised this basic proposed equation and generalised the applicability to bracing members in other concentrically braced frame configurations.A more general relationship was established following a comprehensive survey of the experimental cyclic behaviour of steel bracing members conducted by Tremblay [7], in which buckling resistance, post-buckling resistance in compression, tensile resistance, fracture life and a number of other properties from about 50 members were assessed. Shaback and Brown [8] carried out tests on square hollow section bracing members and calibrated a more sophisticated expression of fracture life, defined as Revised Manuscript Click here to view linked References 2 the weighted sum of normalised compressive and tensile deformation, in terms of global slenderness, local slenderness, aspect ratio of the cross-section and material yield strengt...

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“…Flexural buckling of EHS columns has been studied by Chan and Gardner (2009a). A total of 24 experiments were performed -12 buckling about the major axis and 12 about the minor axis.…”

Section: Flexural Column Bucklingmentioning

confidence: 99%

Structural design of elliptical hollow sections: a review

Chan

Gardner

Law

2010

Proceedings of the Institution of Civil Engineers - Structures

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Tubular construction is synonymous with modern architecture. The familiar range of tubular sections, namely square, rectangular and circular hollow sections, has been recently extended to also include elliptical hollow sections. These new sections combine the elegance of circular hollow sections with the improved structural efficiency in bending of rectangular hollow sections, due to the differing flexural rigidities about the two principal axes. Following the introduction of structural steel elliptical hollow sections (EHS), a number of investigations into their structural response have been carried out. This paper presents a state of the art review of recent research on elliptical hollow sections, together with a sample of practical applications. The following aspects are addressed: fundamental research on elastic local buckling and post-buckling, cross-section classification, response in shear, member instabilities, connections and the behaviour of concrete filled EHS. Details of full scale testing and numerical modelling studies are described, and the generation of statistically validated structural design rules, suitable for incorporation into international design codes, is outlined.

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Flexural Buckling of Elliptical Hollow Section Columns

Cited by 87 publications

References 22 publications

Flexural behaviour of stainless steel oval hollow sections

Flexural behaviour of stainless steel oval hollow sections

Cyclic testing and numerical modelling of carbon steel and stainless steel tubular bracing members

Structural design of elliptical hollow sections: a review

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