Effects of surface nanostructure on boundary lubrication using molecular dynamics

作     者：Ling Pan Hui Yu Shiping Lu Guobin Lin Ling Pan;Hui Yu;Shiping Lu;Guobin Lin

作者机构：School of Mechanical Engineering and AutomationFuzhou UniversityFuzhou 350116China 

出 版 物：《Nanotechnology and Precision Engineering》 (纳米技术与精密工程（英文）)

年 卷 期：2021年第4卷第3期

页      面：54-62页

核心收录：

学科分类：0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 080203[工学-机械设计及理论] 0804[工学-仪器科学与技术] 0802[工学-机械工程] 0703[理学-化学] 0811[工学-控制科学与工程] 0801[工学-力学（可授工学、理学学位）] 080201[工学-机械制造及其自动化] 

基　　金：This work was supported by the National Natural Science Foundation of China(Nos.51875105 and 51875106) the Jinjiang Science and Education Project of Fuzhou University(No.2019-JJFDKY-54) the Industry-Academy Cooperation Project of Fujian Province(No.2020H6025) 

主　　题：Boundary lubrication Rough surface Molecular dynamics Lubricating film Friction coefficient 

摘      要：Molecular dynamics simulations are used to study the boundary lubrication behaviors of squalane lubricant between two iron wall structures during shearing at different pressures and *** lubrication models with a smooth iron wall and a nanostructured iron wall,respectively,are constructed,and the density distribution of the lubricating film and the velocity distribution in the shearing process are *** mechanical response of the solid wall is output,and the friction coefficient is calculated.A tribological test is performed with a UMT-2 tribometer under sliding conditions to evaluate the reliability of the simulation *** results show that the surface nanostructure has a significant effect on the film thickness and delamination of the lubricating film but little effect on the velocity distribution of the lubricating *** nano strip groove helps to reduce the friction coefficient of the boundary lubrication system.