Fastener Spacing Study of Cold-Formed Steel Wall Studs Using Finite Strip and Finite Element Methods
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This study aims to compare the finite element and finite strip methods as they are used to perform buckling analyses of cold-formed steel wall studs. Load-bearing cold-formed steel studs are becoming more common as a building material in both commercial and residential structures. Current design methods allow for the determination of the capacity of single studs under compression. However, entire wall systems often have sheathing attached, which adds bracing and increases stability. Examples of sheathing materials include oriented-strand board (OSB), gypsum, and plywood. Recent work by Vieira (2011) has led to the development of a method to calculate the contributions of sheathing and fasteners to overall wall strength. The equations use various parameters of a wall system and calculate spring stiffness values that can be applied to the fasteners along a stud for three degrees-of-freedom: in the plane of the board (kx), out of the plane of the board (ky), and rotational (kφ).