Multi-scale simulation of three-dimensional thin-film lubrication

作     者：Zuobing WU Zuobing WU

作者机构：State Key Laboratory of Nonlinear MechanicsInstitute of MechanicsChinese Academy of SciencesBeijing 100190China School of Engineering ScienceUniversity of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Friction》 (摩擦（英文版）)

年 卷 期：2021年第9卷第3期

页      面：471-487页

核心收录：

学科分类：08[工学] 080101[工学-一般力学与力学基础] 0801[工学-力学（可授工学、理学学位）] 

基　　金：This research is supported by the National Natural Science Foundation of China(Grants Nos.11172310 and 11472284) the Chinese Academy of Sciences(CAS)Strategic Priority Research Program(XDB22040403) 

主　　题：thin-film lubrication film-substrate coupling strength multi-scale method friction 

摘      要：For three-dimensional(3D)mono-layer molecular thin-film lubrication,the elasticity of the substrate affects the tribological behaviors of a thin fluid film confined by two solid *** account for the elastic effects,this study establishes a multi-scale method that combines an atomistic description of the near region with a coarse-grained description of the far region of the solid substrate to simulate the thin-film *** is demonstrated that for a given temperature range and film-substrate coupling strength,the multi-scale method is in excellent agreement with the fully atomistic *** study reveals that the elastic response of the substrate can be effectively rendered in the hybrid *** the application of the multi-scale method to investigate the tribological properties of the multi-layer molecular thin-film lubrication,it is determined that the systematic static friction coefficient monotonously decreases as the molecular layer thickness in the fluid film *** comparison to the mono-layer molecular thin-film lubrication,the multi-layer molecular thin-film lubrication plays a role in reducing the friction and wear of the system.