BUCKLING STRENGTH OF SIMPLY SUPPORTED WEB PLATE UNDER THE ACTION OF BENDING SHEAR STRESS

Abstract

The purpose of this study is to investigate analytically, using the energy method, the elastic buckling strength of a web plate. The existence of shear forces essentially requires nonuniform bending moment distribution in the longitudinal direction. So the true strength of web plate must be discussed under these combined loading conditions. As the results, it is shown that there is the aspect ratio limit of which the buckling strength is estimated for pure shear buckling strength. This bound are related to the shear stress ratio to bending stress. Finally, the approximation formula for buckling strength evaluation is proposed.