Stress Analysis and Strength Prediction of Stepped-lap AdhesiveJoints of Similar Solid Cylinders Under Static Tensile Loadings

Abstract

This paper deals with stress analyses of stepped-lapa dhesive joints of similar solid cylinders under static tensile loadings.The effects of Young's modulus ratio between adherends and adhesive,the thickness of adhesive,scarf angle,and the number of steps on the interface stress distributions are examined by FEM calculations and experiments.As a result,it is found that the singular stress at the edge of the interfaces decreases as Young's modulus ratio between the adherends and the adhesive, and the adhesive thickness decrease.The singular stress als odecreases as the scarf angle and the number of steps increase.Using the obtained interface stress distribution,the joint strengths are predicted.For verification of the strengt hprediction,experiments to measure the joint strength are carried out.The numerical results of the joint strength are in a good agreement with the experimental results.