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- W3197432088 abstract "Cold-formed steel (CFS) sections are gaining ever increasing popularity in modern construction practice due to their advantages, such as efficient material use and sustainability. While the manufacturing flexibility of CFS cross-sectional shapes brings innovative and complex shapes within practical reach, obtaining optimum design solutions can be a challenging task due to the complex mechanical behaviour of CFS elements, which is controlled by local, distortional and global buckling modes, as well as the need to account for manufacturing and end-use constraints. This study presents a practical framework for the development of optimised CFS beam sections with maximum flexural strength and minimum deflections in ultimate and serviceability limit state conditions, respectively, in accordance with Eurocode 3 (EC3). A population-based Genetic Algorithm optimisation method is employed to obtain optimum solutions for ten different CFS cross-section prototypes, while the EC3 geometric restrictions and a number of manufacturing and end-use constrains are also considered. It is shown that sections optimised based on serviceability limit state (SLS) and ultimate limit state (ULS) requirements can provide up to 44% higher effective stiffness and 55% higher bending moment capacity, respectively, compared to standard commercial lipped channel sections with the same amount of material. The results also indicate that using optimised plain channels and folded-flange sections generally leads to the best design solution in SLS and ULS optimization, respectively." @default.
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- W3197432088 date "2021-09-01" @default.
- W3197432088 modified "2023-09-27" @default.
- W3197432088 title "Optimized Design of Cold‐Formed Steel Elements for Serviceability and Ultimate Limit States" @default.
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- W3197432088 doi "https://doi.org/10.1002/cepa.1319" @default.
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