Effect of a longitudinal stiffener on the elastic shear buckling of orthotropic web plate

Abstract

This paper presents the effects of a longitudinal stiffener on the elastic buckling of orthotropic web plate under in-plane shear forces. In the study, the edges of web plate are assumed to be simply supported. The stiffener is modeled as a beam element and the torsional rigidity of stiffener is neglected. The minimum value of shear buckling coefficient of longitudinal stiffened orthotropic plate is estimated by the buckling analysis of an infinite long plate with a longitudinal stiffener under in-plane shear forces. The buckling analysis of longitudinally stiffened orthotropic rectangular plate is also performed and the results are presented in the graphical form. For the buckling analysis, the Rayleigh-Ritz method is employed. To verify the results obtained by using the ensuing equation, the orthotropic material properties are replaced with the isotropic ones and the results are compared with published ones.