Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
권호 표지
DOI QR코드

DOI QR Code

Study on the Transient EHL Fluid Film for the Dynamic Contact Behaviors between Cam and Follower with Multigrid Multilevel Method

다중격자 다중차원 기법을 응용한 캠과 종동물의 비정상 상태의 유막특성 연구

  • 장시열 (국민대학교 기계자동차 공학부)
  • Published : 2004.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

Many researches about the contacts between cam and follower have investigated EHL film thickness either without dynamic loading effect or only with curve fitting formula such as Dowson-Hamrock's, because including squeeze film effect makes it hard to obtain convergence and stability of computation. Therefore, inaccurate information about minimum film thickness without dynamic loading condition causes inappropriate design of cam profiles and wrong selection of cam and follower materials. In this work, computation tools both for kinematics and dynamics of valve train system of push-rod type and for fluid film thickness with elastic deformation on the basis of dynamic loading condition with multigrid multi-level method is developed. The computational results of minimum film thickness with the respects of both static and dynamic loading conditions are compared for the contact of flat follower over the entire cycle.

Keywords

References

  1. SAE92047 FLARE: An Integrated Package for Friction and Lubrication Analysis of Automotive Engines Goenka,P.K.;Paranjps,R.S.;Y.R.Jeng
  2. Tribology Int. v.13 no.3 Kinematics and Geometry of Cam and Finger Follower System Dyson,A. https://doi.org/10.1016/0301-679X(80)90056-0
  3. Ph.D. thesis, Columbia University The Analytic Development and Experimental Verification of a Prediction Model of a High-Speed Cam-Follower System Pisano,A.P.
  4. Tribology Series v.26 Engine Tribology Taylor,C.M.
  5. Informational Conference on Frontiers of Tribology A Transient Elastohydrodynamic Lubrication Anlaysis of a Cam and Follower Dowson,D.;Taylor,C.M.;Zhu,G.
  6. Journal of Engineering Tribology v.208 Fluid Film Lubrication in Automobile Valve Train Taylor,C.M. https://doi.org/10.1243/PIME_PROC_1994_208_377_02
  7. Journal of Tribology v.108 Fast Approach for Calculating Film Thickness and Pressures in Elasto-hydrodynamically Lubricated Contacts at High loads Houpert,L.;Hamrock,B.J. https://doi.org/10.1115/1.3261220
  8. Fundamentals of Fluid Film Lubrication Hamrock,B.J.
  9. Journal of Tribology v.108 Multigrid, An Alternative Method for Calculating Film Thickness and Pressure Profiles in Elastohydro-dyanmically Lubricated Line Contacts Lubrecht,A.;Napel, W. E. Ten;Bosma,R. https://doi.org/10.1115/1.3261260
  10. Internal Combustion Engine Fundamentals Heywood,J.