Cross-section behaviour and capacity of cold-formed austenitic stainless steel flat-oval hollow sections under combined compression and bending
Flat-oval hollow section is composed of two semi-circular elements and two flat elements, with the semi-circular elements (exposed to wave and wind) offering a low level of hydrodynamic and aerodynamic drag and the flat elements facilitating connections with other members perpendicular to the wave a...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | https://hdl.handle.net/10356/179386 |
| _version_ | 1811688354547236864 |
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| author | Li, Shuai Jiang, Ke Chen, Man-Tai Su, Andi Guo, Tong Zhao, Ou |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Li, Shuai Jiang, Ke Chen, Man-Tai Su, Andi Guo, Tong Zhao, Ou |
| author_sort | Li, Shuai |
| collection | NTU |
| description | Flat-oval hollow section is composed of two semi-circular elements and two flat elements, with the semi-circular elements (exposed to wave and wind) offering a low level of hydrodynamic and aerodynamic drag and the flat elements facilitating connections with other members perpendicular to the wave and wind directions. This paper presents an experimental and numerical study of the cross-section behaviour and resistance of cold-formed austenitic stainless steel flat-oval hollow section stub columns under combined compression and bending. An experimental programme, including initial local geometric imperfection measurements and ten major-axis and minor-axis eccentric compression tests, was firstly carried out, with the test setups, procedures and results fully reported. Following the experimental programme, a numerical modelling programme was performed, with finite element models developed and validated against the eccentric compression test results and then used to conduct parametric studies to generate additional numerical data. Based on the test and numerical results, the relevant codified design interaction curves for cold-formed austenitic stainless steel rectangular hollow sections were evaluated for the applicability to their flat-oval hollow section counterparts. It was found from the evaluation results that the codified design interaction curves led to inaccurate resistance predictions, mainly due to the conservative end points (i.e. cross-section resistances under pure compression and pure bending) and inefficient shapes. Finally, a new design interaction curve was proposed through the use of more accurate end points and more efficient shape and offered more accurate and consistent resistance predictions for cold-formed austenitic stainless steel flat-oval hollow sections under combined loading than the codified design interaction curves. |
| first_indexed | 2024-10-01T05:30:53Z |
| format | Journal Article |
| id | ntu-10356/179386 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:30:53Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1793862024-07-29T05:37:17Z Cross-section behaviour and capacity of cold-formed austenitic stainless steel flat-oval hollow sections under combined compression and bending Li, Shuai Jiang, Ke Chen, Man-Tai Su, Andi Guo, Tong Zhao, Ou School of Civil and Environmental Engineering Engineering Austenitic stainless steel Combined compression and bending Flat-oval hollow section is composed of two semi-circular elements and two flat elements, with the semi-circular elements (exposed to wave and wind) offering a low level of hydrodynamic and aerodynamic drag and the flat elements facilitating connections with other members perpendicular to the wave and wind directions. This paper presents an experimental and numerical study of the cross-section behaviour and resistance of cold-formed austenitic stainless steel flat-oval hollow section stub columns under combined compression and bending. An experimental programme, including initial local geometric imperfection measurements and ten major-axis and minor-axis eccentric compression tests, was firstly carried out, with the test setups, procedures and results fully reported. Following the experimental programme, a numerical modelling programme was performed, with finite element models developed and validated against the eccentric compression test results and then used to conduct parametric studies to generate additional numerical data. Based on the test and numerical results, the relevant codified design interaction curves for cold-formed austenitic stainless steel rectangular hollow sections were evaluated for the applicability to their flat-oval hollow section counterparts. It was found from the evaluation results that the codified design interaction curves led to inaccurate resistance predictions, mainly due to the conservative end points (i.e. cross-section resistances under pure compression and pure bending) and inefficient shapes. Finally, a new design interaction curve was proposed through the use of more accurate end points and more efficient shape and offered more accurate and consistent resistance predictions for cold-formed austenitic stainless steel flat-oval hollow sections under combined loading than the codified design interaction curves. Ministry of Education (MOE) The research work presented in this paper receives financial supports from the Regency Steel Asia (RSA) Endowment Fund, Singapore (Award Number: 03INS001251C120) and Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 Grant (Award Number: RG122/ 21). 2024-07-29T05:37:17Z 2024-07-29T05:37:17Z 2024 Journal Article Li, S., Jiang, K., Chen, M., Su, A., Guo, T. & Zhao, O. (2024). Cross-section behaviour and capacity of cold-formed austenitic stainless steel flat-oval hollow sections under combined compression and bending. Thin-Walled Structures, 199, 111877-. https://dx.doi.org/10.1016/j.tws.2024.111877 0263-8231 https://hdl.handle.net/10356/179386 10.1016/j.tws.2024.111877 2-s2.0-85190274921 199 111877 en RG122/ 21 Thin-Walled Structures © 2024 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering Austenitic stainless steel Combined compression and bending Li, Shuai Jiang, Ke Chen, Man-Tai Su, Andi Guo, Tong Zhao, Ou Cross-section behaviour and capacity of cold-formed austenitic stainless steel flat-oval hollow sections under combined compression and bending |
| title | Cross-section behaviour and capacity of cold-formed austenitic stainless steel flat-oval hollow sections under combined compression and bending |
| title_full | Cross-section behaviour and capacity of cold-formed austenitic stainless steel flat-oval hollow sections under combined compression and bending |
| title_fullStr | Cross-section behaviour and capacity of cold-formed austenitic stainless steel flat-oval hollow sections under combined compression and bending |
| title_full_unstemmed | Cross-section behaviour and capacity of cold-formed austenitic stainless steel flat-oval hollow sections under combined compression and bending |
| title_short | Cross-section behaviour and capacity of cold-formed austenitic stainless steel flat-oval hollow sections under combined compression and bending |
| title_sort | cross section behaviour and capacity of cold formed austenitic stainless steel flat oval hollow sections under combined compression and bending |
| topic | Engineering Austenitic stainless steel Combined compression and bending |
| url | https://hdl.handle.net/10356/179386 |
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