Two-Dimensional Stress Analysis of Single-Lap Adhesive Joints Filled with Circular Hole Defects in the Adhesives Subjected to Tensile Shear Loads.

Abstract

The stress distributions in single-lap adhesive joints with circular hole defects in adhesives are analyzed using a two-dimensional theory of elasticity when the joints are subjected to tensile shear loads. In the numerical calculations, the effects of the size, location, number of holes and the ratio of Young's modulus for an adhesive to that for adherends on the principal stress distributions at the interfaces and around the circular holes are examined. As a result, it is found that the stress concentration around holes increases and the stress singularity at the edges of the interfaces decreases as the hole size increases. The stress distributions in joints are analyzed by the finiteelement method. Photoelastic experiments were also performed. Fairly good agreement is seen among the analytical results, the F.E.M results and the experimental results.