Experimental and numerical investigations of austenitic stainless steel semi-oval hollow sections under combined compression and bending
Semi-oval hollow section is an innovative cross-section profile, including 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 othe...
| 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/10356/175801 |
| _version_ | 1811678119380123648 |
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| author | Li, Shuai Guo, Tong Zhao, Ou |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Li, Shuai Guo, Tong Zhao, Ou |
| author_sort | Li, Shuai |
| collection | NTU |
| description | Semi-oval hollow section is an innovative cross-section profile, including 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. This paper presents experimental and numerical investigations into the local buckling behaviour and resistances of austenitic stainless steel semi-oval hollow sections under combined compression and bending. A testing programme was firstly conducted and included initial local geometric imperfection measurements and ten eccentric compression tests. In conjunction with the testing programme, a numerical modelling programme was performed, where finite element models were developed to validate against the test results and conduct parametric studies for expanding the test data pool over a wider range of cross-section dimensions and loading combinations. The obtained test and numerical data were used to evaluate the applicability of the relevant design interaction curves for austenitic stainless steel rectangular hollow sections, as prescribed in the European code and American specification, to austenitic stainless steel semi-oval hollow sections. On the basis of the evaluation results, the codified design interaction curves were found to provide conservative resistance predictions. Finally, an improved design interaction curve, with more accurate end points and suitable shape, was developed and led to more accurate and consistent resistance predictions for austenitic stainless steel semi-oval hollow sections under combined compression and bending. |
| first_indexed | 2024-10-01T02:48:12Z |
| format | Journal Article |
| id | ntu-10356/175801 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:48:12Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1758012024-05-07T00:45:20Z Experimental and numerical investigations of austenitic stainless steel semi-oval hollow sections under combined compression and bending Li, Shuai Guo, Tong Zhao, Ou School of Civil and Environmental Engineering Engineering Austenitic stainless steel Continuous strength method Semi-oval hollow section is an innovative cross-section profile, including 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. This paper presents experimental and numerical investigations into the local buckling behaviour and resistances of austenitic stainless steel semi-oval hollow sections under combined compression and bending. A testing programme was firstly conducted and included initial local geometric imperfection measurements and ten eccentric compression tests. In conjunction with the testing programme, a numerical modelling programme was performed, where finite element models were developed to validate against the test results and conduct parametric studies for expanding the test data pool over a wider range of cross-section dimensions and loading combinations. The obtained test and numerical data were used to evaluate the applicability of the relevant design interaction curves for austenitic stainless steel rectangular hollow sections, as prescribed in the European code and American specification, to austenitic stainless steel semi-oval hollow sections. On the basis of the evaluation results, the codified design interaction curves were found to provide conservative resistance predictions. Finally, an improved design interaction curve, with more accurate end points and suitable shape, was developed and led to more accurate and consistent resistance predictions for austenitic stainless steel semi-oval hollow sections under combined compression and bending. Ministry of Education (MOE) The research work presented in this paper receives financial supports from the Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 Grant (Award Number: RG122/21). 2024-05-07T00:45:20Z 2024-05-07T00:45:20Z 2024 Journal Article Li, S., Guo, T. & Zhao, O. (2024). Experimental and numerical investigations of austenitic stainless steel semi-oval hollow sections under combined compression and bending. Engineering Structures, 306, 117814-. https://dx.doi.org/10.1016/j.engstruct.2024.117814 0141-0296 https://hdl.handle.net/10356/175801 10.1016/j.engstruct.2024.117814 2-s2.0-85188430170 306 117814 en RG122/21 Engineering Structures © 2024 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering Austenitic stainless steel Continuous strength method Li, Shuai Guo, Tong Zhao, Ou Experimental and numerical investigations of austenitic stainless steel semi-oval hollow sections under combined compression and bending |
| title | Experimental and numerical investigations of austenitic stainless steel semi-oval hollow sections under combined compression and bending |
| title_full | Experimental and numerical investigations of austenitic stainless steel semi-oval hollow sections under combined compression and bending |
| title_fullStr | Experimental and numerical investigations of austenitic stainless steel semi-oval hollow sections under combined compression and bending |
| title_full_unstemmed | Experimental and numerical investigations of austenitic stainless steel semi-oval hollow sections under combined compression and bending |
| title_short | Experimental and numerical investigations of austenitic stainless steel semi-oval hollow sections under combined compression and bending |
| title_sort | experimental and numerical investigations of austenitic stainless steel semi oval hollow sections under combined compression and bending |
| topic | Engineering Austenitic stainless steel Continuous strength method |
| url | https://hdl.handle.net/10356/175801 |
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