Influences of Particle’s Friction Coefficient on Tribological Behaviour of Third-Body Interface

Abstract:

Based on discontinuous mechanics, the non-fluidized particles flow lubrication model in tilting pad tribopairs is proposed by the discrete element method (DEM). The influences of the particles’ friction coefficient have been investigated mathematically. The wettability and adhesion ability between particles and rubbing surfaces are weaker than fluid lubricant, but its fluid-like properties distinguished it from solid lubricant. These reasons endow particles flow with some unique characteristics as a lubricant. The results indicate that the peak of load profile and friction force profile is located at the inlet zone of tilting pad under particulate lubrication. Particles with a lower friction coefficient can decrease the system friction coefficient and increase the load capacity of tribosystem, which provided helpful guidance to engineering application. The study of the microscopic characteristics which included the mean contact force, body energy, contact friction energy and particle kinetic energy has been carried out at the same time.

• Periodical: Advanced Materials Research (Volumes 479-481)
• Pages: 1074-1077
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.479-481.1074
• Online since: February 2012
• Authors: Wei Wang, Xiao Jun Liu, Kun Liu, Jin Long Shen
• Keywords: Discrete Element Method (DEM), Friction Coefficient (FC), Particulate Lubrication, Third-Body

References

[1] N.S.K. Reddy and P.V. Rao: International Journal of Machine Tools & Manufacture Vol. 46 (2006) p.189.

[2] R. Kimura, M. Yoshida, G. Sasaki, J. Pan and H. Fukunaga: J Mater Process Tech Vol. 130 (2002) p.289.

[3] R.G. Kaur and H. Heshmat: Tribol. Trans. Vol. 45 (2002) p.76.

[4] H. Heshmat: Lubric. Eng. Vol. 48 (1992) p.373.

[5] Y.N. Drozdov: Soviet Engineering Research Vol. 6 (1986) p.13.

[6] W. Wang, X.J. Liu, T. Xie and K. Liu: Tribology Letters Vol. 43 (2011) p.213.

[7] W. Wang, X.J. Liu, K. Liu and H.X. Li: Tribology Transactions Vol. 53 (2010) p.274.

[8] H. Heshmat and D.E. Brewe: Journal of Tribology-Transactions of the Asme Vol. 118 (1996) p.484.

[9] W.G. Sawyer, J.C. Ziegert, T.L. Schmitz and A. Barton: Tribol. Trans. Vol. 49 (2006) p.284.

[10] C.M. Yu and J. Tichy: Tribol. Trans. Vol. 39 (1996) p.537.

[11] E.Y.A. Wornyoh, V.K. Jasti and C.F. Higgs: J. Tribol. Vol. 129 (2007) p.438.

[12] P.A. Cundall and O.D.L. Strack: Geotechnique Vol. 29 (1979) p.47.

[13] M. Renouf, H.P. Cao and V.H. Nhu: Tribol. Int. Vol. 44 (2011) p.417.