Nonlinear flexural behaviour of efficient profiled cold-formed steel cross-sections
This study deals with sequential efficient profiling of CFS sections subjected to flexure. Two series of built up sections, open sections (OS) and box sections (BS), were fabricated and tested under four point loading with same cross-sectional area. Test strengths, modes of failure, deformed shapes, load vs. mid-span displacements and geometric imperfections were measured and reported. The design strengths were quantified using North American Standards and Indian Standards for cold-formed steel structures. This study confirmed that easy and efficient profiling of CFS sections can result in cross-sections with higher performance as well as better economy.
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