Laboratory tests, numerical simulations and design of austenitic stainless steel semi-oval hollow section columns
Semi-oval hollow section is an innovative cross-section profile and consists of one semi-circular flange, one flat flange and two flat webs. While the semi-circular flange (exposed to fluid or wind) offers a low level of hydrodynamic or aerodynamic drag, the flat elements facilitate connections with...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | https://hdl.handle.net/10356/175842 |
| _version_ | 1811680138073473024 |
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| author | Li, Shuai Zhao, Ou |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Li, Shuai Zhao, Ou |
| author_sort | Li, Shuai |
| collection | NTU |
| description | Semi-oval hollow section is an innovative cross-section profile and consists of one semi-circular flange, one flat flange and two flat webs. While the semi-circular flange (exposed to fluid or wind) offers a low level of hydrodynamic or aerodynamic drag, the flat elements facilitate connections with other members. The flexural buckling behaviour and resistances of austenitic stainless steel semi-oval hollow section columns are investigated in this paper. An experimental programme was firstly conducted on two austenitic stainless steel semi-oval hollow sections, with six column specimens of varying member lengths adopted for each cross-section, and included tensile coupon tests, initial geometric imperfection measurements and pin-ended column tests. Both ‘C’-shaped flexural buckling (with failure specimens bowing towards semi-circular flanges) and ‘reverse C’-shaped flexural buckling (with failure specimens bowing towards flat flanges) were observed upon testing. The experimental programme was accompanied by a numerical modelling programme, with finite element models developed to simulate the test results and then adopted to conduct parametric studies to generate further numerical data. On the basis of the test and numerical data, the relevant buckling curves for austenitic stainless steel circular hollow section columns, as provided in the European code, American specification and Australian/New Zealand standard, were evaluated for their applicability to austenitic stainless steel semi-oval hollow section columns. The evaluation results generally revealed that the codified buckling curves led to overall accurate and consistent flexural buckling resistance predictions when used for austenitic stainless steel semi-oval hollow section columns. |
| first_indexed | 2024-10-01T03:20:17Z |
| format | Journal Article |
| id | ntu-10356/175842 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:20:17Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1758422024-05-08T01:45:46Z Laboratory tests, numerical simulations and design of austenitic stainless steel semi-oval hollow section columns Li, Shuai Zhao, Ou School of Civil and Environmental Engineering Engineering Austenitic stainless steel Design buckling curves Semi-oval hollow section is an innovative cross-section profile and consists of one semi-circular flange, one flat flange and two flat webs. While the semi-circular flange (exposed to fluid or wind) offers a low level of hydrodynamic or aerodynamic drag, the flat elements facilitate connections with other members. The flexural buckling behaviour and resistances of austenitic stainless steel semi-oval hollow section columns are investigated in this paper. An experimental programme was firstly conducted on two austenitic stainless steel semi-oval hollow sections, with six column specimens of varying member lengths adopted for each cross-section, and included tensile coupon tests, initial geometric imperfection measurements and pin-ended column tests. Both ‘C’-shaped flexural buckling (with failure specimens bowing towards semi-circular flanges) and ‘reverse C’-shaped flexural buckling (with failure specimens bowing towards flat flanges) were observed upon testing. The experimental programme was accompanied by a numerical modelling programme, with finite element models developed to simulate the test results and then adopted to conduct parametric studies to generate further numerical data. On the basis of the test and numerical data, the relevant buckling curves for austenitic stainless steel circular hollow section columns, as provided in the European code, American specification and Australian/New Zealand standard, were evaluated for their applicability to austenitic stainless steel semi-oval hollow section columns. The evaluation results generally revealed that the codified buckling curves led to overall accurate and consistent flexural buckling resistance predictions when used for austenitic stainless steel semi-oval hollow section columns. 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). 2024-05-08T01:45:46Z 2024-05-08T01:45:46Z 2024 Journal Article Li, S. & Zhao, O. (2024). Laboratory tests, numerical simulations and design of austenitic stainless steel semi-oval hollow section columns. Thin-Walled Structures, 198, 111648-. https://dx.doi.org/10.1016/j.tws.2024.111648 0263-8231 https://hdl.handle.net/10356/175842 10.1016/j.tws.2024.111648 2-s2.0-85184516854 198 111648 en 03INS001251C120 RG122/21 Thin-Walled Structures © 2024 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering Austenitic stainless steel Design buckling curves Li, Shuai Zhao, Ou Laboratory tests, numerical simulations and design of austenitic stainless steel semi-oval hollow section columns |
| title | Laboratory tests, numerical simulations and design of austenitic stainless steel semi-oval hollow section columns |
| title_full | Laboratory tests, numerical simulations and design of austenitic stainless steel semi-oval hollow section columns |
| title_fullStr | Laboratory tests, numerical simulations and design of austenitic stainless steel semi-oval hollow section columns |
| title_full_unstemmed | Laboratory tests, numerical simulations and design of austenitic stainless steel semi-oval hollow section columns |
| title_short | Laboratory tests, numerical simulations and design of austenitic stainless steel semi-oval hollow section columns |
| title_sort | laboratory tests numerical simulations and design of austenitic stainless steel semi oval hollow section columns |
| topic | Engineering Austenitic stainless steel Design buckling curves |
| url | https://hdl.handle.net/10356/175842 |
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