Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
권호 표지
DOI QR코드

DOI QR Code

Study of the Film Thickness Behaviors in the Elastohydrodynamic Lubrication of Circular Contact under the Dynamic Loading Condition with Multigrid Multilevel Method

변동하중 조건에서 점접촉 탄성유체윤활의 유막거동 연구

  • 조재철 (국민대학교 자동차공학대학원) ;
  • 장시열 (국민대학교 기계자동차공학부)
  • Published : 2009.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

Many research of elastohydrodynamic lubrication (EHL) has been performed under the condition of steady state loading. However, mechanical elements undergo severe high loads that are in the fluctuating modes of frequency and amplitude. Conventional numerical method for the circular contact of EHL study has the difficulty in making the film thickness and pressure of EHL converged in high loads of steady state as well as fluctuating loading conditions. In this work, multigrid multilevel method are used for the stable convergence of film pressure and thickness under the conditions of high as well as varying loads, and very stable solutions of film behaviors with elastic deformation are obtained. Several results of dynamic loading condition are shown and compared with those of steady state condition in the aspects of circular EHL film thickness and pressure.

Keywords

References

  1. Houpert, L. and Hamrock, B. J., 'Fast Approach for Calculating Film Thickness and Pressures in Elastohydrodynamically Lubricated Contacts at High Loads,' J. Tribology, Vol. 108, pp. 411-420, 1986 https://doi.org/10.1115/1.3261220
  2. Dowson, D., Harrison, P. and Taylor, C. M., 'The Lubrication of Automotive Cams and Followers,' Mechanism and Surface Distress, 12th Leeds-Lyon Conference, pp. 305-322, 1985
  3. Dowson, D., Taylor, C. M. and Zhu, G., 'A Transient Elastohydrodynamic Lubrication Analysis of a Cam and Follower,' J. Physics: Applied Physics, Vol.25, pp. A-313-A320, 1992 https://doi.org/10.1088/0022-3727/25/1A/047
  4. Lubrecht, A., Napel W. E. ten and Bosma, R., 'Multigrid, An Alternative Method for Calculating Film Thickness and Pressure Profiles in Elastohydrodynamically Lubricated Line Contacts,' J. Tribology, Vol. 108, pp.551-556, 1986 https://doi.org/10.1115/1.3261260
  5. Venner, C. H., Ten napel, W. E., and Bosma, R., 'Advanced Multilevel Solution of the EHL Line Contact Problem,' J. Tribology, pp 426-432, 1990 https://doi.org/10.1115/1.2920277
  6. Venner, C. H., Lubrecht, A. A. and Napel, W. E., 'Numerical Simulation of the Overrolling of a Surface Feature in an EHL Line Contact,' J. Tribology, Vol. 133, pp777-783, 1991 https://doi.org/10.1115/1.2920692
  7. Scales, L.E., Rycroft, J. E., Horswill, N. R. and Williamson, B. P., 'Simulation and Observation of Transient Effects in Elastohydrodynamic Lubrication,' SAE 961143
  8. Ehret, P., Dowson, D., Taylor, C. M. and Wang, D., 'Analysis of Isothermal Elastohydrodynamic Point Contact Lubricated by Newtonian Fluids using Multigrid Methods,' J. Engineering Tribology, Vol. 211, pp. 493-508, 1997 https://doi.org/10.1243/0954406971521881