ELASTIC-PLASTIC ADHESION MODEL FOR SINGLE ASPERICAL ASPERITY MICROCONTACT  

作　　者：PENG Yunfeng GUO Yinbiao 

机构地区：[1]Department of Mechanical Engineering, Xiamen University, Xiamen 361005, China

出　　处：《Chinese Journal of Mechanical Engineering》2008年第4期101-104,共4页中国机械工程学报（英文版）

基　　金：China Post Doctor Science Foundation(No. 20070420748);Fujian Provincial Natural Science Foundation of China(E0610032).

摘　　要：The adhesion of single asperity contacting with a rigid flat is investigated. The microcontact model of the deformable asperity is established utilizing fractal geometry, which makes the resuRed adhesion model to relate with the surface characteristics that the asperity belongs to. The Dugdale approximation is utilized to consider the adhesive interaction within and outside the contact area. Then the model for solving the elastic-plastic adhesion of single asperity is presented by combing the Maugis-Dugdale（MD） model. To illustrate the necessity of considering the plastic deformation in microcontact, simulations of the relationship between the adhesive contact load and the interference of the asperity are performed. The result shows that the presented model is more suitable for the solution of the elastic-plastic microcontact of spherical asperity due to intermolecular adhesive interactions.The adhesion of single asperity contacting with a rigid flat is investigated. The microcontact model of the deformable asperity is established utilizing fractal geometry, which makes the resuRed adhesion model to relate with the surface characteristics that the asperity belongs to. The Dugdale approximation is utilized to consider the adhesive interaction within and outside the contact area. Then the model for solving the elastic-plastic adhesion of single asperity is presented by combing the Maugis-Dugdale（MD） model. To illustrate the necessity of considering the plastic deformation in microcontact, simulations of the relationship between the adhesive contact load and the interference of the asperity are performed. The result shows that the presented model is more suitable for the solution of the elastic-plastic microcontact of spherical asperity due to intermolecular adhesive interactions.

关 键 词：Microcontact Elastic-plastic adhesion Dugdale approximation Fractal geometry 

分 类 号：TG174.464[金属学及工艺—金属表面处理] P208[金属学及工艺—金属学]