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.
| Original language | English |
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| DOIs | |
| Publication status | Published - 5 Sept 2016 |
| Externally published | Yes |
| Event | Proceedings of 6th International Conference on Structural Engineering Mechanics and Computation - Duration: 9 May 2016 → … |
Conference
| Conference | Proceedings of 6th International Conference on Structural Engineering Mechanics and Computation |
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| Period | 9/05/16 → … |