Finite element analysis of a triangular beam seat stiffener plate

Abstract

Beam seat stiffeners, such as those employed for beam and crane girder connections in industrial building, are structural elements which, to date, are designed using rule-of-thumb procedures. Both theoretical and experimental results of previous investigations into this problem are available. The proposed design methods contained therein, however, are encumbered with complex equations and multiple graph value determinations. For these reasons, current design practice usually involves providing stiffener plate thicknesses considerably in excess of that of the supported member's web, rather than making any realistic attempt to optimize the design with a minimum thickness.

The finite element method of analysis was used in this study to determine the stress levels within a triangular stiffener plate these findings were combined with earlier theoretical and experimental investigations to rationally develop design aids which will enable a designer to quickly determine a minimum stiffener plate thickness. Both yield stress limitations and buckling considerations were incorporated into the design aid formulations.