흡착접촉하는 돌기의 마찰특성에 관한 연구 = A Study on Frictional Characteristics of Adhesively-Contacting Asperities

다국어 초록 (Multilingual Abstract)

Friction characteristics of elastic hemispherical bumps adhesively contacting the plane surface of a semi-infinite rigid body are analyzed using the finite element technique. Analyses focus on the effect of bump radii and affinity between contact bodies on the friction resistance of adhesive contact. The friction resistance of adhesive contact is estimated with the analysis results regarding the pull-off force and the adhesive contact area. Dependence of the maximum equivalent stress at the bump surface on both the bump radius and the affinity is also examined to investigate the possibility of plastic deformation of asperity surface that is associated with adhesive wear of bump. Analysis results in the absence of adhesive force are also included to examine the effect of adhesive force. It is demonstrated that the surface possessing the larger bump experiences higher friction with lower possibility of adhesive wear.