Open AccessLow friction and high load-carrying capacity of a slider bearing with an inhomogeneous surface affinity
Author(s) -
Wenxue Shi,
Bowen Sun,
Chenyu Lu,
Weidong Wen,
Liang Guo
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1654/1/012035
Subject(s) - slider , materials science , limiting , lubrication , slip (aerodynamics) , bearing (navigation) , boundary lubrication , shear stress , boundary value problem , mechanics , fluid bearing , surface (topology) , mechanical engineering , composite material , computer science , engineering , thermodynamics , mathematics , physics , geometry , mathematical analysis , artificial intelligence
In fluid lubrication systems, lower friction means less energy consumption, whereas higher film thickness means higher load-carrying capacity and lower probability of wear. Traditionally, friction coefficient increases with oil film thickness, which cannot meet the design requirements of modern equipment, such as MEMS. In this study, we attempt to tackle this challenge by introducing an inhomogeneous surface affinity on a static slider bearing surface. A model combining the limiting shear stress and slip length is adopted to analyse the effect of boundary slip on the hydrodynamic performance of a slider bearing. The model is firstly verified by comparing the calculated results with the experimental data, and then parameter study is conducted. Results indicate that lower friction and higher film thickness can be realised simultaneously by a specific design of the inhomogeneous surface affinity.