摘要
介绍了微观力学分析方法(分子动力学、离散元模拟方法)与宏观力学分析方法(有限元模拟方法)在自润滑轴承摩擦学性能评价上的研究进展,其中微观力学分析从颗粒的角度出发,能更直观地模拟自润滑轴承摩擦学性能,但有限的计算长度与时间尺度限制了其进一步应用;宏观力学分析从材料的均匀性假设出发,可对自润滑轴承的整个磨损过程模拟仿真,然而当轴承材料中不同微粒的力学性能、粒度、形状及分布状态差异较大时,计算精确度难以保证。对于研究含多相材料自润滑轴承的摩擦学性能,微观与宏观力学耦合分析的多尺度模拟研究是一个新思路,具有较为广阔的应用前景。
The research progress of micro-mechanics analysis method (molecular dynamics, discrete element simulation method) and macro-mechanics analysis method (finite element simulation method) on evaluation for tribological properties of self-spherical bearings is introduced. Among these methods, the micro-mechanics analysis simulates tribological properties of self-lubricating bearings more intuitively from the angle of particles, but the limited calculation length and time scale limit its further application. The macro-mechanics analysis simulates whole wear process of self-lubricating bearings from the angle of homogenization assumption for material, but the calculation accuracy is difficult to guarantee when the mechanical properties, sizes, shapes and distribution states of different particles in bearing material are quite different. For study on tribological properties of self-lubricating bearings with multiphase materials, the multi-scale simulation study on micro- mechanical and macro-mechanical coupling analysis is a new idea and has a broad application prospect.
作者
陈伟东
邹芹
李艳国
王明智
CHEN Weidong;ZOU Qin;LI Yanguo;WANG Mingzhi(College of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China;State Key Laboratory of Metastable Materials Science and Engineering,Yanshan University,Qinhuangdao 066004,China)
出处
《轴承》
北大核心
2019年第10期58-67,共10页
Bearing
基金
河北省首批青年拔尖人才支持计划(冀组字[2016]9号)
丹凤朝阳人才计划(丹人才办[2019]3号)
关键词
自润滑轴承
摩擦学
数值模拟
微观力学分析
宏观力学分析
self-lubricating bearing
tribology
numerical simulation
micro-mechanics analysis
macro-mechanics analysis
