Cold-formed sections (CFS) fabricated using high strength steel have recently been utilised in construction due to their numerous advantages, such as higher load-to-weight ratio, flexibility of shape, and availability relatively long spans. High CFS channel can be used purlins joists structural systems; thus, they are vulnerable different buckling instabilities, including web crippling. Predict...

Cold-formed steel (CFS) elements have gained significant attention in the field of structural engineering due to their numerous advantages, including high strength-to-weight ratio, cost-effectiveness, and ease assembly prefabrication. This review paper presents a comprehensive state-of-the-art analysis design CFS structures, with specific focus on columns beams. The primary objectives aims this...

This paper presents the development of a composite cold-formed steel (CFS)-rubberised concrete (RuC) semi-rigid moment-resisting connection suitable for framed building structures. The comprises built-up tubular beam and column sections connected using side-plate screwed fasteners infilled with rubberised concrete. A detailed finite element analysis validated against physical tests is employed ...

Flexibility in the manufacturing of cold-formed steel (CFS) cross-sectional shapes provides a unique opportunity to improve load-carrying capacity these elements, leading more efficient and economic structural systems. This paper presents practical constrained optimization methodology for pin-ended anti-symmetric CFS beam-columns members with different lengths subjected various combinations axi...

In construction industry, cold-formed steel sections become more pertinent in place of hot-rolled members. The design guides for CFS are inadequate and hence it is substantial to investigate their governing behaviours as material failure structural instability (buckling). This study aims analyse how the buckling face-to-face built-up box short columns administrated by application end plates wit...

Cold-formed steel (CFS) is one of the popular materials in low and mid-rise building construction. However, CFS member capacities reduce at elevated temperatures as their yield strength Young's modulus decrease with increasing temperature. In addition, exhibits nonlinear stress-strain characteristics temperatures, which significantly different to ambient temperature characteristics. Although se...

In current design standards, cold-formed steel (CFS) beam-column elements are generally designed by considering fully warping free behaviour in their supports, which means the benefit of warping-restrained boundary conditions is neglected. addition, while a non-linear relationship governs interaction axial compression and bending, simplified linear expressions prescribed may lead to unreliable ...

Abstract This research investigates the behaviour of novel U‐connector used in cold‐formed steel (CFS) truss‐to‐column connection. The novelty is reflected specially designed connector geometry and connection method within cross‐section thin‐walled C‐profile. installed inside can be exposed to tensile, compressive shearing action. shear thoroughly investigated using laboratory tests. Three diff...

the formation of nano/ultrafine grained ferrite in low carbon steels containing different amounts of niobiumwas investigated using thermomechanical treatment which consisted of annealing of 85% cold rolled martensite with different parameters. the specimens were characterized by optical and scanning electron microscopy and vickers hardness test. a lamellar dislocation cell structure was formed ...