Numerical simulation and experimental investigation on static behavior of cold formed steel beam with trapezoidally corrugated web by varying depth-thickness ratio

Abstract

This paper presents a numerical simulation and experimental investigation on the static behavior of cold-formed steel beams with trapezoidally corrugated web has been carried out to find its structural performance of simply supported beam under pure bending. The steel beams with corrugated steel webs represent a new innovative which has emerged in the past decade for short- and medium-span beams. The thin corrugated web affords a significant weight reduction of these beams, compared with hot-rolled beams. In the initial solution, the flanges are made of flat plates, welded to the trapezoidal web sheet, requiring a specific welding technology. The connecting between flanges to the web can be done by means of intermittent welding. The paper summarizes the experimental and numerical investigations carried out at the Hindustan University and, at the end, presents the flexural behavior of cold-formed steel beams with trapezoidally corrugated web. To find the effect of web corrugation, 12 experiments were conducted on cold-formed steel beams. Beams having two different web depth-thickness (dw/tw) ratio 60 and 80 and with three types of web corrugation angles 0°, 30° and 45° were tested. Two beams were tested in each series. The static performance of the three different corrugation angles, including failure mode, load–deflection curves, strength capacity, load–strain curves, moment–curvature curves, flexural stiffness and ductility, are compared and discussed in detail based on the experimental results. Finally, numerical analysis using ANSYS Workbench results are analyzed and the experimental results were validated with the results obtained from the finite element analysis.