Soft three-body particle lubrication is the use of a large number of loose solid particles in the interface of the load and shear behavior to achieve low friction under special environment, so the study of the force of granular media friction interface in the shear process has great significance to the analysis of lubrication mechanism and the design of the lubrication device. In the study, the third-body granules are compared to fluid, a mixed lubrication model which contains large particles in rough interface is based on Reynolds equation, viscosity equation, Greenwood and Williamson contact model (G-W model) and so on. In this model, the total load and friction of the friction pair are composed of three parts:fluid, asperity and large granules. By using the finite difference method to solve the above physical model, the effects of the film thickness ratio, mass concentration, granular size, surface morphology and elastic modulus on the three-body contact interface of the load and friction are investigated, and the mechanical properties of the soft three-body contact interface are also analyzed by coupling the large granule size with the contact surface roughness. Based on the analysis of the mixed lubrication model, reasonable choices of large particle concentration, granular size, surface morphology of the specimen and elastic modulus helps to improve the load, reduce friction and make the soft three-body granular flow have better friction-reducing and lubrication performance.
WANG Chao
,
KONG Junchao
,
WANG Wei
. Research on Soft Three-body Contact of Rough Interface Mixed Lubrication Model[J]. Journal of Mechanical Engineering, 2018
, 54(21)
: 113
-119
.
DOI: 10.3901/JME.2018.21.113
[1] GODET M. The third-body approach:A mechanical view of wear[J]. Wear, 1984, 100(1):437-452.
[2] 韩晓明, 高飞, 符蓉. 三体摩擦体系中材料摩擦特性的研究进展[J]. 中国材料进展, 2009, 28(2):8-13. HAN Xiaoming, GAO Fei, FU Rong. Recent progress in tribological theories involving the behavior of the third body[J]. Materials China, 2009, 28(2):8-13.
[3] 温诗铸, 黄平. 摩擦学原理[M]. 北京:清华大学出版社, 2012. WEN Shizhu, HUANG Ping. Tribology theory[M]. Beijing:Qinghua University Press, 2012.
[4] HESHMAT H. The quasi-hydrodynamic mechanism of powder lubrication-part Ⅲ:On theory and rheology of triboparticulates[J]. Tribology Transactions, 1995, 38(2):269-276.
[5] 刘峰壁, 李续娥, 谢友柏. 粗糙表面三体接触理论研究[J]. 机械工程学报, 1997, 33(3):27-31. LIU Fengbi, LI Xue, XIE Youbai. Theoretical investigation on three body contact about rough surfaces[J]. Chinese Journal of Mechanical Engineering,1997, 33(3):27-31.
[6] WORNYOH E Y A, Ⅲ C F H. An asperity-based fractional coverage model for transfer films on a tribological surface[J]. Wear, 2011, 270(3-4):127-139.
[7] IORDANOFF I, KHONSARI M M. Granular lubrication:Toward an understanding of the transition between kinetic and quasi-fluid regime[J]. Journal of Tribology, 2004, 126(1):137-145.
[8] 王伟, 史超, 王智勇, 等. 多参数对三体摩擦界面剪切膨胀过程的影响[J]. 应用力学学报, 2015, 32(5):731-737. WANG Wei, SHI Chao, WANG Zhiyong, et al. Effects of several changing parameters on shear dilatancy process in three-body frictional interface[J]. Chinese Journal Of Applied Mechanics, 2015, 32(5):731-737.
[9] HESHMAT H, HESHMAF C A. On the rheodynamics of powder lubricated journal bearing:Theory and experiment[J]. Tribology & Interface Engineering, 1999, 36(99):537-549.
[10] 黄平, 孟永钢, 徐华. 摩擦学教程[M]. 北京:高等教育出版社, 2008. HUANG Ping, MENG Yonggang, XU Hua. Tribology course[M]. Beijing:Higher Education Press, 2008.
[11] GREENWOOD J A, WILLIAMSON J B P. Contact of nominally flat surfaces[J]. Proceedings of the Royal Society A Mathematical Physical & Engineering Sciences, 1966, 295(295):300-319.
[12] KHONSARI M M, WANG S H, QI Y L. A theory of liquid-solid lubrication in easley hydrodynamic regime[J]. ASME, Journal of Tribology, 1989, 111(3):440-444.
[13] TOMIMOTO M, MIZUHARA K. Effect of particles concentration on friction[J]. Tribology, 1999, 36(36):789-795.
[14] WANG W, LIU K, JIAO M. Thermal and non-newtonian analysis on mixed liquid-solid lubrication[J]. Tribology International, 2007, 40(7):1067-1074.
[15] HOU K, KALOUSEK J, MAGEL E. Rheological model of solid layer in rolling contact[J]. Wear, 1997, 211(1):134-140.
