The effect of adhesion on axisymmetric contact between a spherical punch and FGM coating

摘要

This paper investigated the axisymmetric contact problem of a functionally graded material (FGM) coating by considering the adhesion effect. The Maugis-Dugdale adhesion theory is adopted to describe the adhesion effect between the contact bodies. The Hankel integral transform is applied to obtain the singular integral equations which represent the axisymmetric adhesive contact problem of FGM coating with exponential varying modulus. The impact of the adhesion parameter, gradient index of FGM coating and thickness of coating on the contact behaviour is presented by numerically solving the singular integral equations. The results provide a method to improve the contact deformation and damage by adjusting the gradient of the FGM coating.