Experimental Study of the Mechanical Properties of Cold-Formed Steel Profiles of Frameless Buildings

Abstract

We present a methodology and results of experimental study of the mechanical properties of carbon steels in cold-formed profiles used in frameless buildings. The profiling technology provides two-stage cold bending of steel bars: i)rolling of a straight profile, and ii) rolling of a curved profile using trandverse corrugation of corresponding faces whereby the initial material undergoes two stages of strain hardening. Both straight and curved (arched) profiles are considered. The standard mechanical properties of steel are determined. The results of experimental studies demonstrated that the material of the corner site of the profile gains additional strengthening resulted from transverse corrugation: the mechanical strength of stell increases, whereas the ductility undergoes significant reduction.