| Residential College | false |
| Status | 已發表Published |
| Strength enhancement and cross-section behavior of cold-formed steel elliptical hollow sections with steel grades up to 960MPa | |
Wai-Meng QUACH 
| |
| 2023-12-07 | |
| Size of Audience | more than 50 |
| Type of Speaker | Conference speaker |
| Abstract | This paper aims to numerically investigate the local geometric imperfections, strength enhancement and cross-section response of cold-formed (CF) steel elliptical hollow sections (EHS) with steel grades up to 960MPa. In this paper, an advanced finite element (FE) stub column model of CF steel tubes is presented, in which strength enhancement, residual stresses, geometric imperfections resulting from cold-forming are predicted by using a rigorous FE simulation of roll-forming. This FE model was validated against test results. By using this validated FE model, a parametric study on the stub-column response of CF steel EHS was then conducted for a wide range of section sizes and steel grades (up to steel grade of 960MPa). Based on the generated FE data, predictive models for the strength enhancement and local imperfections of CF steel EHS are proposed. The cross-section classification for CF steel EHS were also examined according to the slenderness limits of circular hollow sections (CHS) in the existing design codes. Finally, a new yield slenderness limit for CF steel EHS is proposed. |
| Source Publication | The Eleventh International Conference on Advances in Steel Structures (ICASS’2023), Kuching, Sarawak, Malaysia, 5-7 December 2023 |
| Conference Date | 5-7 December 2023 |
| Conference Place | Kuching, Sarawak, Malaysia |
| Language | 英語English |
| Document Type | Presentation |
| Collection | DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING |
| Corresponding Author | Wai-Meng QUACH |
| Affiliation | University of Macau, Macau, China |
| First Author Affilication | University of Macau |
| Recommended Citation GB/T 7714 | Wai-Meng QUACH. Strength enhancement and cross-section behavior of cold-formed steel elliptical hollow sections with steel grades up to 960MPa[Z]. The Eleventh International Conference on Advances in Steel Structures (ICASS’2023), Kuching, Sarawak, Malaysia, 5-7 December 2023, 5-7 December 2023. |
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