A Two-Dimensional Stress Analysis of Butt Adhesive Joints Filled With Rigid Circular Fillers in an Adhesive Subjected to External Bending Moments.

Abstract

This paper deals with a two-dimensional stress analysis of butt adhesive joints with rigid fillers in an adhesive subjected to external bending moments. Assuming that adherends are rigid, and replacing an adhesive with a finite strip including rigid fillers, the analysis was performed using the two-dimensional theory of elasticity in order to examine the strength of joints. The effects of the location and size of rigid fillers on the stress distributions around the fillers and at the interface were shown by numerical calculations. For verification, photoelastic experiments were performed. The analytical result was in fairly good agreement with the experimental result. It was seen that due to the amount of shift of location and size of fillers, the strength of joint was more improved than that of the joints without a filler. The stress singularity at the edge of the interface was discussed.