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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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. |
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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 |
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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. |
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School of Civil and Environmental Engineering |
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School of Civil and Environmental Engineering Liang, Yating Jeyapragasam, Vijaya Vengadesh Kumar Zhang, Lulu Zhao, Ou |
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Article |
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Liang, Yating Jeyapragasam, Vijaya Vengadesh Kumar Zhang, Lulu Zhao, Ou |
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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 |
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2020 |
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https://hdl.handle.net/10356/141165 |
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1681058526356570112 |