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Traction Behavior of No. 4129 Synthetic Oil for Space Lubrication

  • Yanshuang Wang
  • Guoliang ZhangEmail author
  • Erqiang Wang
Technical Article---Peer-Reviewed
  • 59 Downloads

Abstract

No. 4129 lubricating oil, a kind of synthetic oil, was widely applied in area of space machinery, while its traction behavior has not been realized. In this work, the elastohydrodynamic properties of No. 4129 have been investigated by subjecting it to our self-made test rig at various experiment conditions. The results revealed that the effect of the load on the traction coefficient is greater when the load exceeds 69 N at a fixed rolling velocity. In addition, the rolling speed exerts a smaller influence on the traction coefficient when rolling speed exceeds 11 m/s at a fixed load. Therefore, this lubricating oil exhibits elastic–plastic rheological properties under the prevailing experimental conditions. Based on the obtained experiment data, we have established a new formulae for calculating the traction coefficients of the lubricating oil. In contrast, the calculated traction coefficients by the formulae were fairly well agreed with the measured data. The resulted theoretical formulae will provide a better direction for No. 4129 used as lubricating oil under a severe working condition in space.

Keywords

Lubricating oil Traction behavior Elastohydrodynamic lubrication 

Notes

Acknowledgments

This research is supported by the National Science Foundation of China (Nos. 51475143, 51105131) and Tianjin Natural Science Foundation (No. 16JCYBJC18900).

References

  1. 1.
    Y.F. Xu, J. Geng, X.J. Zheng, K.D. Dearn, X.G. Hu, Friction-induced transformation from graphite dispersed in esterified bio-oil to graphene. Tribol. Lett. 63, 18 (2016)CrossRefGoogle Scholar
  2. 2.
    S. Bair, M. Khonsari, W.O. Winer, High-pressure rheology of lubricants and limitations of the Reynolds equation. Tribol. Int. 31(10), 573–586 (1998)CrossRefGoogle Scholar
  3. 3.
    J.M. Ford, K. Chen, Speeding up the solution of thermal FHL problems. Int. J. Numer. Methods Eng. 53(10), 2305–2310 (2002)CrossRefGoogle Scholar
  4. 4.
    A.V. Olver, H.A. Spike, Prediction of traction in elastohydrodynamic lubrication. Proc. Inst. Mech. Eng. 212(5), 321–332 (1998)CrossRefGoogle Scholar
  5. 5.
    N. Fang, L. Chang, G.J. Jonson, An experimental/theoretical approach to modeling the viscous behavior of liquid lubricants in elastohydrodynamic lubrication contacts. Proc. Inst. Mech. Eng. 215(4), 311–318 (2001)CrossRefGoogle Scholar
  6. 6.
    M. Muraki, D. Dong, Rheological properties of high-viscosity-index mineral base oils for automotive engine lubricants. Lubr. Sci. 17(2), 185–196 (2005)CrossRefGoogle Scholar
  7. 7.
    I. Krupka, S. Bair, P. Kumar, P. Svoboda, M. Hartl, Mechanical degradation of the liquid in an operating EHL contact. Tribol. Lett. 41(1), 191–197 (2011)CrossRefGoogle Scholar
  8. 8.
    P.Q. Ge, Z.C. Liu, Experimental and computational investigation of the traction coefficient of a ball traction drive device. Tribol. Int. 35(4), 219–224 (2002)CrossRefGoogle Scholar
  9. 9.
    P.M.E. Cann, B. Damiens, A.A. Lubrecht, The transition between fully flooded and starved regimes in EHL. Tribol. Int. 37(10), 859–864 (2004)CrossRefGoogle Scholar
  10. 10.
    B.C. Elie, C.B. Juliette, M. Denis, J. Frédéric, B. Alain, A non-Newtonian model based on ReeEyring theory and surface effect to predict friction in elastohydrodynamic lubrication. Tribol. Int. 43(9), 1674–1682 (2010)CrossRefGoogle Scholar
  11. 11.
    Y.S. Wang, B.Y. Yang, L.Q. Wang, P.B. Zheng, Traction behavior of 4106 aviation lubricating oil. Tribology 24(2), 156–159 (2004)Google Scholar
  12. 12.
    Y.S. Wang, L.P. Zhang, B.Y. Yang, The development of a lubricant traction measurement system. J. Hydrodyn. 23(4), 516–520 (2011)CrossRefGoogle Scholar

Copyright information

© ASM International 2019

Authors and Affiliations

  1. 1.College of Mechanical EngineeringTianjin University of Technology and EducationTianjinChina

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