Postbuckling strength of slender elliptical hollow sections in compression

Conference paper


McCann, F (2016). Postbuckling strength of slender elliptical hollow sections in compression. Proceedings of 6th International Conference on Structural Engineering Mechanics and Computation. Cape Town 05 - 07 Sep 2016 doi:10.1201/9781315641645-116
AuthorsMcCann, F
TypeConference paper
Abstract

Numerical analysis of the local buckling behaviour and ultimate cross-sectional strength of tubular elliptical profiles in compression has been performed. After validating the model against previous experimental results, a parametric study comprising a total of 270 elliptical sections was conducted in order to examine the influence of cross-section aspect ratio, geometric imperfections and local slendernesses. The obtained ultimate capacities, load–deformation responses and failure modes are discussed. It was found that for lower cross-section aspect ratios the behaviour of The Elliptical Hollow Sections (EHS) was similar to that of cylindrical shells across a number of metrics; as the aspect ratio increased, more plate-like stable postbuckling behaviour was observed. A design method has been proposed for Class 4 EHS members that reflects the reduction in capacity due to local buckling with increasing slenderness, but also recognises the improved postbuckling stability with increasing aspect ratio.

Year2016
Digital Object Identifier (DOI)doi:10.1201/9781315641645-116
Accepted author manuscript
License
CC BY 4.0
File Access Level
Open
Publication dates
Print05 Sep 2016
Publication process dates
Deposited12 Jun 2017
Accepted05 Sep 2016
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https://openresearch.lsbu.ac.uk/item/87268

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