Finite Element Analysis of Structural Steel Elliptical Hollow Sections in Compression (No. R874)
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Open Access
Type
Report, ResearchAbstract
This paper presents a finite element investigation of the local buckling behaviour of the structural steel Elliptical Hollow Section (EHS) in compression. The theoretical elastic buckling load of an EHS is similar to that of a Circular Hollow Section (CHS) except that the diameter ...
See moreThis paper presents a finite element investigation of the local buckling behaviour of the structural steel Elliptical Hollow Section (EHS) in compression. The theoretical elastic buckling load of an EHS is similar to that of a Circular Hollow Section (CHS) except that the diameter term, D, is replaced by D12/D2, representing the major and minor diameters of the ellipse. The overall aim is to examine whether an “equivalent CHS” can be used to model the local buckling of EHS when considering imperfections and non-linear material properties. The finite element program ABAQUS was used to examine the local buckling behaviour of EHS with a range of aspect ratios from 1:1 (CHS) to 10:1 to examine the transitional behaviour. Three types of analysis were considered. The first stage was elastic buckling with no material imperfection. The second stage considered inelastic material properties, followed by measured material properties. The final stage was to investigate how geometric imperfection affected the buckling modes. The results are benchmarked against experimental results. It was found that the use of an equivalent CHS was a reasonably good predictor of capacity of slender sections and the deformation capacity of compact sections. However, further benchmarking against experimental results is recommended.
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See moreThis paper presents a finite element investigation of the local buckling behaviour of the structural steel Elliptical Hollow Section (EHS) in compression. The theoretical elastic buckling load of an EHS is similar to that of a Circular Hollow Section (CHS) except that the diameter term, D, is replaced by D12/D2, representing the major and minor diameters of the ellipse. The overall aim is to examine whether an “equivalent CHS” can be used to model the local buckling of EHS when considering imperfections and non-linear material properties. The finite element program ABAQUS was used to examine the local buckling behaviour of EHS with a range of aspect ratios from 1:1 (CHS) to 10:1 to examine the transitional behaviour. Three types of analysis were considered. The first stage was elastic buckling with no material imperfection. The second stage considered inelastic material properties, followed by measured material properties. The final stage was to investigate how geometric imperfection affected the buckling modes. The results are benchmarked against experimental results. It was found that the use of an equivalent CHS was a reasonably good predictor of capacity of slender sections and the deformation capacity of compact sections. However, further benchmarking against experimental results is recommended.
See less
Date
2007Publisher
School of Civil Engineering, The University of SydneyLicence
Copyright All Rights ReservedRights statement
This publication may be redistributed freely in its entirety and in its original form without the consent of the copyright owner. Use of material contained in this publication in any other published works must be appropriately referenced, and, if necessary, permission sought from the author.Faculty/School
Faculty of Engineering, School of Civil EngineeringDepartment, Discipline or Centre
Centre for Advanced Structural EngineeringShare