A Study on the Bending Rigidity of an Adhesive Joint Subjected to a Bending Load Tangential to Bonding Surfaces

Abstract

The deformation characteristics of a cantilever beam structure, in which a beam was bonded onto a base using a bonding surface parallel to the axis of the beam and which was subjected to a bending load tangential to the bonding surfaces, have been examined both theoretically and experimentally. It was shown that the deformation and rigidity of the adhesive joint could be well estimated by using the theory of bending of a beam on an elastic foundation. Effects of the length of the flange and the thickness of the adhesive layer on the rigidity were clarified, and a design criterion of adhesive joints was proposed. It was observed that the rigidity of the adhesive joint was greater than that of the bolted joint when the thickness of the adhesive layer was thin, and that greaterload could be applied to an adhesive joint than to a bolted joint.