A mechanical model for the adhesive contact with local sliding induced by a tangential force  

作　　者：Gan-Yun Huang Ji-Feng Yan 

机构地区：[1]Department of Mechanics,School of Mechanical Engineering,Tianjin University

出　　处：《Acta Mechanica Solida Sinica》2017年第4期369-373,共5页固体力学学报（英文版）

基　　金：supported by the National Key Basic Research Program (No.2012CB937500);Natural Science Foundation of China (No.11572216)

摘　　要：Adhesion has been demonstrated to play an important role in contact and friction between objects at small scales. While various models have been established for adhesive contact under normal forces, studies on the adhesive contact under tangential force have been far fewer, which if any, are mostly confined to the non-slipping situations. In the present work, a model has been proposed for adhesive contact with local sliding under tangential forces. Herein, the onset of local sliding in adhesive contact has been addressed by assuming the nucleation of dislocations. By analogy with the emission of dislocations at a crack tip, the critical tangential force for the onset of sliding has been determined, and its effect on the evolution of contact size has also been studied. Comparison with relevant experiments has verified the validity of the present model.Adhesion has been demonstrated to play an important role in contact and friction between objects at small scales. While various models have been established for adhesive contact under normal forces, studies on the adhesive contact under tangential force have been far fewer, which if any, are mostly confined to the non-slipping situations. In the present work, a model has been proposed for adhesive contact with local sliding under tangential forces. Herein, the onset of local sliding in adhesive contact has been addressed by assuming the nucleation of dislocations. By analogy with the emission of dislocations at a crack tip, the critical tangential force for the onset of sliding has been determined, and its effect on the evolution of contact size has also been studied. Comparison with relevant experiments has verified the validity of the present model.

关 键 词：Adhesive contact Tangential force Local sliding DISLOCATION Contact size 

分 类 号：O343.3[理学—固体力学]