Shear buckling behavior of tapered cantilever beams with corrugated trapezoidal web under concentrated tip load. (June 2022)

• Record Type: Journal Article
• Authors: Shariatyazdi, Payam; Ronagh, Hamid; Izadinia, Mohsen; Javaheritafti, Mohammad Reza
• Is Part Of: Journal of constructional steel research. Volume 193(2022)
• Publication Date: 2022-06
• Subjects: Tapered cantilever beam -- Corrugated web angle -- Finite element -- Local shear buckling capacity; Steel, Structural -- Periodicals; Building, Iron and steel -- Periodicals; Acier de construction -- Périodiques; Construction métallique -- Périodiques; 624.1821
• DOI: 10.1016/j.jcsr.2022.107265
• Languages: English
• ISSNs: 0143-974X

Abstract

Abstract: Economical method of designing beams often involves the use of variable cross-sections combined with stiffened plates. Further economies in terms of weight reduction can be gained if in lieu of stiffened plates, corrugated webs are used. The purpose of this paper is to investigate the shear buckling capacity of the Tapered Cantilever Beams (TCB) with corrugated trapezoidal webs under concentrated load at the tip and assessing, the effect of corrugated web angle on the buckling capacity of TCB. Four test specimens of TCB with corrugated trapezoidal web were made and tested. Finite element nonlinear buckling analysis was performed and the correlation between the analytical and experimental results was found to be quite good. To assess the accuracy of the theoretical formula of local shear buckling stress capacity, a parametric study of several TCB with different panel widths and angles was conducted. The results showed that by increasing the web angle from 30° to 75°, depending on the panel width and the tapered angle of TCB, the buckling capacity increased up to 14.6%. According to the results of the analysis, a formula is proposed for calculating the local buckling capacity of TCB that allows the incorporation of the corrugated web angle. Highlights: By increasing the taper angle, the buckling shear stress capacity increased in Tapered Cantilever Beams (TCB). As the width of the panel decreases, the effect of the corrugated web angle on the shear buckling stress increases. With the decrease of panel width of TCB, the peak load carrying capacity increased. By increasing the web angle from 30° to 75°, depending on the panel width and tapered angle of TCB, the buckling capacity increased up to 14.6%.