Two-Dimensional Stress Analysis and Strength of Band Adhesive Butt Joints of Dissimilar Adherends Subjected to External Bending Moments

Abstract

The stresses of band adhesive butt joints, in which the interfaces were partially bonded, were analyzed using a two-dimensional theory of elasticity in order to establish the fracture criteria when the joints of dissimilar adherends were subjected to external bending moments. In the analysis, the dissimilar adherends and the adhesive were replaced with finite strips when the interfaces were bonded by the adhesive at two regions. In the numerical calculations, the effect of the ratios of Young's moduli between adherends and the adhesive, the thickness of the adhesive, the bonding area and the position on the stress distributions at the interfaces were demonstrated. As a result, it was seen that band adhesive joints were available when the bonding area and positions were determined taking into account the external load distributions. Experiments were performed on the strains of adherends and the joint strength. Analytical results were consistent with the experimental ones.