Flexural-torsional buckling behaviour of fixed-ended hot-rolled austenitic stainless steel equal-leg angle section columns

The present paper shows an experimental and numerical modelling investigation of the flexural-torsional buckling behaviour and load-carrying capacities of fixed-ended hot-rolled austenitic stainless steel equal-leg angle section columns. The testing programme was conducted on four austenitic stainle...

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Main Authors: Liang, Yating, Jeyapragasam, Vijaya Vengadesh Kumar, Zhang, Lulu, Zhao, Ou
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/141165
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1411652020-06-04T08:49:10Z Flexural-torsional buckling behaviour of fixed-ended hot-rolled austenitic stainless steel equal-leg angle section columns Liang, Yating Jeyapragasam, Vijaya Vengadesh Kumar Zhang, Lulu Zhao, Ou School of Civil and Environmental Engineering Engineering::Civil engineering Austenitic Stainless Steel Design Analysis The present paper shows an experimental and numerical modelling investigation of the flexural-torsional buckling behaviour and load-carrying capacities of fixed-ended hot-rolled austenitic stainless steel equal-leg angle section columns. The testing programme was conducted on four austenitic stainless steel angle sections and involved material testing, initial global and torsional imperfection measurements and sixteen fixed-ended column tests. This was followed by a numerical simulation study, where the numerical models were firstly developed to validate against the experimental data and then utilised to perform numerical parametric studies to generate additional results over a broader range of member lengths and cross-section geometric dimensions. The derived test and finite element results were carefully analysed and then utilised to evaluate the accuracy of the established design rules in Europe, America and Australia/New Zealand. Comparisons of the failure loads derived from the experimental and numerical studies with the corresponding codified flexural-torsional buckling strength predictions revealed an unduly high level of conservatism and scatter. Extension of the direct strength method to carbon steel equal-leg angle section columns has been recently made, and the applicability of the approach to fixed-ended hot-rolled austenitic stainless equal-leg steel angle section columns was also assessed. The new approach was generally shown to yield more precise flexural-torsional buckling resistance predictions than the existing design standards, but a large portion of the predictions were unsafe, indicating that further improvements are required. 2020-06-04T08:49:09Z 2020-06-04T08:49:09Z 2018 Journal Article Liang, Y., Jeyapragasam, V. V. K., Zhang, L., & Zhao, O. (2019). Flexural-torsional buckling behaviour of fixed-ended hot-rolled austenitic stainless steel equal-leg angle section columns. Journal of Constructional Steel Research, 154, 43-54. doi:10.1016/j.jcsr.2018.11.019 0143-974X https://hdl.handle.net/10356/141165 10.1016/j.jcsr.2018.11.019 2-s2.0-85057373354 154 43 54 en Journal of Constructional Steel Research © 2018 Elsevier Ltd. All rights reserved.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Engineering::Civil engineering
Austenitic Stainless Steel
Design Analysis
spellingShingle Engineering::Civil engineering
Austenitic Stainless Steel
Design Analysis
Liang, Yating
Jeyapragasam, Vijaya Vengadesh Kumar
Zhang, Lulu
Zhao, Ou
Flexural-torsional buckling behaviour of fixed-ended hot-rolled austenitic stainless steel equal-leg angle section columns
description The present paper shows an experimental and numerical modelling investigation of the flexural-torsional buckling behaviour and load-carrying capacities of fixed-ended hot-rolled austenitic stainless steel equal-leg angle section columns. The testing programme was conducted on four austenitic stainless steel angle sections and involved material testing, initial global and torsional imperfection measurements and sixteen fixed-ended column tests. This was followed by a numerical simulation study, where the numerical models were firstly developed to validate against the experimental data and then utilised to perform numerical parametric studies to generate additional results over a broader range of member lengths and cross-section geometric dimensions. The derived test and finite element results were carefully analysed and then utilised to evaluate the accuracy of the established design rules in Europe, America and Australia/New Zealand. Comparisons of the failure loads derived from the experimental and numerical studies with the corresponding codified flexural-torsional buckling strength predictions revealed an unduly high level of conservatism and scatter. Extension of the direct strength method to carbon steel equal-leg angle section columns has been recently made, and the applicability of the approach to fixed-ended hot-rolled austenitic stainless equal-leg steel angle section columns was also assessed. The new approach was generally shown to yield more precise flexural-torsional buckling resistance predictions than the existing design standards, but a large portion of the predictions were unsafe, indicating that further improvements are required.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Liang, Yating
Jeyapragasam, Vijaya Vengadesh Kumar
Zhang, Lulu
Zhao, Ou
format Article
author Liang, Yating
Jeyapragasam, Vijaya Vengadesh Kumar
Zhang, Lulu
Zhao, Ou
author_sort Liang, Yating
title Flexural-torsional buckling behaviour of fixed-ended hot-rolled austenitic stainless steel equal-leg angle section columns
title_short Flexural-torsional buckling behaviour of fixed-ended hot-rolled austenitic stainless steel equal-leg angle section columns
title_full Flexural-torsional buckling behaviour of fixed-ended hot-rolled austenitic stainless steel equal-leg angle section columns
title_fullStr Flexural-torsional buckling behaviour of fixed-ended hot-rolled austenitic stainless steel equal-leg angle section columns
title_full_unstemmed Flexural-torsional buckling behaviour of fixed-ended hot-rolled austenitic stainless steel equal-leg angle section columns
title_sort flexural-torsional buckling behaviour of fixed-ended hot-rolled austenitic stainless steel equal-leg angle section columns
publishDate 2020
url https://hdl.handle.net/10356/141165
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