Behaviour and performance of OSB-sheathed cold-formed steel stud wall panels under combined vertical and seismic loading

This paper investigates the in-plane lateral behaviour and capacity of cold-formed steel (CFS) stud wall panels which are sheathed with Oriented Strand Board (OSB). Detailed nonlinear FE models were developed, accounting for material properties, geometric nonlinearity, realistic fastener imperfections. The validated against available experimental data subsequently employed to conduct comprehensive parametric studies into effects key design variables, including screw spacing, OSB CFS element thicknesses, board layout configuration, intensity gravity loading number boards (single- vs. double-sheathed systems). structural performance studied was compared in terms their load capacity, initial stiffness, failure mechanisms, deformation ductility, energy dissipation. Lateral stiffness dissipation positively influenced by a reduced thicker an absence seams boards. Ductility generally promoted increased thinner vertical seams. High ratios have potential dramatically reduce strength, ductility