Perforated cold-formed steel (PCFS) beams are increasingly used in constructional industry and become popular due to their advantages economic benefit. Apart from the light weight, openings PCFS can also be for services such as pipe utilities release more building space. However, with web perforations may collapse result of web-distortional buckling or flange/web distortional weakness caused by...

This paper presents the results of finite-element simulations leading to development a design method using direct strength (DSM) for transversely loaded thin-walled steel beams prone local and distortional buckling failures at elevated temperatures. The systematic extensive numerical parametric study covers different dimensions sections, temperature distributions in cross-section, grades load r...

This paper presents the application of micro/macromechanics models and optimization techniques for the optimum design of pultruded glass fiberreinforced plastic composite I-beams with respect to material architecture: fiber orientations and fiber percentages. The beams are subjected to transverse loading, and beam deflection, buckling resistance and material failure are considered as multiple o...