Numerical Study of Unstiffened Cold-Formed Steel Sections Moment Connection

Cold-Formed Steel sections are commonly used in residential and commercial buildings as purlins, side girts, portal frames moment resisting frames. The bolted connections can be connect the different structural components of these together. These allowing transfer internal forces structures such axial forces, shear bending moments torsion. main objective this paper is to study numerically behavior apex connection for cold formed sections. deflection stress distribution at critical unstiffened 2C (double back-to-back) CFS were investigated two cases, first case connecting single gusset plate was used, while second double plates with cutting compression flange used. A finite element modeling developed by using ANSYS workbench v19.2 code simulate cold-formed steel considered beams had span lengths 4000 mm nominal web depths 150 mm. wall thickness 2.0 validation numerical model experimental results executed. Parametric concerning thickness, no bolts pretension presented. Based on analysis deflections ultimate failure load modes specimens studied