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More Accurate Design Equations for Cold-formed Steel Members Subjected to Combined Axial Compressive Load and Bending by Hasanali, Maryam (author);Mojtabaei, Seyed Mohammad (author);Hajirasouliha, Iman (author);Clifton, G. Charles (author);Lim, James B.P. (author) is a Engineering article available to read on EtoBox.
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Cold-formed steel (CFS) load-bearing members in multi-storey frame systems are subjected to combined actions sourced from gravity and lateral loads. However, limited information is available on the complex interaction behaviour of such elements affected by different buckling modes. This study aims to provide a better understanding of the behaviour and design of CFS sections under various combinations of compression and bending about both major- and minor-axes. Experimentally validated finite element (FE) models of CFS elements were developed in ABAQUS software, accounting for material nonlinearity and geometric imperfections. The validated models were then used to conduct a parametric study to assess the structural performance and failure modes of over 500 CFS elements with various lengths, thicknesses and cross-sectional dimensions under 19 different load eccentricities. It was demonstrated that the element and web slenderness ratios and the magnitude and direction of eccentricity are the key factors affecting the behaviour of the CFS beam–column elements. The accuracy of current design specifications, including American Iron and Steel Institute (AISI-S100), Australian/New Zealand
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- Author
- Hasanali, Maryam (author);Mojtabaei, Seyed Mohammad (author);Hajirasouliha, Iman (author);Clifton, G. Charles (author);Lim, James B.P. (author)
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Engineering (Physical Sciences)