Column curves for elliptical hollow section members

Nowzartash, Farhood; Mohareb, Magdi

doi:10.1016/j.jcsr.2011.03.026

Cited by 10 publications

(1 citation statement)

References 24 publications

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“…The impressive amount of work carried out by Gardner and colleagues was recently summarised by Chan et al (2010). More recently, other researchers (Nowzartash and Mohareb, 2011;Scullion et al, 2012) contributed to better understanding of the behaviour and design of EHS columns. Young (2011, 2012) presented very interesting test and numerical results on columns with oval hollow cross-sections.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of semi-elliptical hollow section columns

Silvestre

Pires²,

Duarte³

2013

Proceedings of the Institution of Civil Engineers - Structures

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Structures and BuildingsVolume 166 Issue SB8 Numerical analysis of semi-elliptical hollow section columns Silvestre, Pires and DuarteThe buckling behaviour, ultimate strength and failure of columns with semi-elliptical hollow section are examined in this paper, using finite-strip analyses and shell finite-element analyses. Semi-elliptical hollow sections are a unique case of section shape, since they possess a flat part (plate behaviour) and a semi-elliptical part (shell behaviour).Assessing the contribution of each part to the buckling and ultimate behaviour of semi-elliptical hollow section columns is the main objective of this paper. The buckling behaviour is first analysed using finite-strip software and the ultimate behaviour is then studied using shell finite-element software. From the finite-strip results it is shown that local buckling of semi-elliptical hollow section columns is solely governed by the instability of the flat part. From shell finite-element results it is shown that the ultimate behaviour is mostly governed by the pre-buckling stiffness of the semi-elliptical part. Some columns have ultimate loads well above the critical load (associated with local plate buckling) due to the stiffness of the semi-elliptical part, for which the buckling stress is much higher than that of flat part. Finally, some preliminary design guidance is proposed. An expression to predict the ultimate strength is presented and shown to provide accurate results.

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Section: Introductionmentioning

confidence: 99%