Experimental Investigations of the Behavior of Stiffened Perforated Cold-Formed Steel Sections Subjected to Axial Compression

Cold-formed steel sections are becoming popular for different structures, because they have a high resistance against straining actions, with minimal weight compared hard sections. Recently, perforated cold-formed (PCFS) been used in many applications, such as upright storage racks. Experimental research into the behavior of rack uprights subjected to axial compression is presented this paper. First, tensile tests determined material qualities uprights. Then, seventeen specimens were examined under compression, five cross-sections, three web heights and thicknesses, varying lengths. The study’s goals find out how perforations affect performance failure mode uprights, discuss interaction distortional global buckling, verify accuracy using direct strength method (DSM) predicting ultimate before buckling interactions It was found that modes stiffeners generally cannot be well predicted method. However, when modifications proposed by Xianzhong Zhao et al. used, acceptable.