Numerical analysis of castellated 2C cold-formed steel beams.

The main objective of this paper is to investigate numerically the performance of employing a 2C shell section Castellated with lipped beams under monotonic loading conditions till the point of failure. A total of seven artificially produced samples of castellated shell beams, together with one reference beam that was not castellated, were subjected to testing as simply supported beams. The beams were loaded with concentrated forces at two places over a clear span length of 1730 mm. All castellated beams exhibited uniformity in terms of their qualities and dimensions, with the exception being the variation in width between the top and bottom flanges. The primary variable in this study is to impact of altering the size of the top and bottom flanges' width on the structural performance of these beams. The findings indicated that the ultimate load-carrying capacity of the tested castellated beams, were varied between 99.3% and 117.2% relative to the non- castellated reference beam (R1). Additionally, the ultimate deflection of the tested beams, in comparison to the same reference beam (R1), ranged from 72.6% to 103.2%. The relationship between the increase in width of the top and bottom flanges and the strength and ultimate load of castellated beams is exactly proportional. In conclusion, altering the flange width interchangeably between the upper and lower flanges of castellated beams has a negligible impact on both the rigidity and maximum load capacity. [ABSTRACT FROM AUTHOR]