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Paper 310

A Fast Analytical Technique for Transient Elasto-Hydrodynamic Lubrication based on Acquisition of Contact Stiffness and Damping Distributions

S.C. Zhu^1,2, D. Nelias² and W.H. Zhang¹

¹State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu, Sichuan, China
²Université de Lyon, INSA-Lyon, LaMCoS UMR CNRS 5259, Villeurbanne, France

doi:10.4203/ccp.110.310

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S.C. Zhu, D. Nelias, W.H. Zhang, "A Fast Analytical Technique for Transient Elasto-Hydrodynamic Lubrication based on Acquisition of Contact Stiffness and Damping Distributions", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 310, 2016. doi:10.4203/ccp.110.310

Keywords: hydrodynamic lubrication, transient EHL problem, EHL stiffness distribution, EHL damping distribution.

Summary

In this paper, a new method is proposed to illustrate the transient elasto-hydrodynamically lubricated (EHL) problem. A steady-state solution of the EHL problem is obtained as the initial state of a dynamic load-increasing (or -decreasing) procedure. Based on the continuous acquisition of the EHL stiffness and damping distributions, dynamic mechanical behaviours of oil film are predicted, using a balance calculation of the load increment. Meanwhile, the availability of the EHL stiffness and damping distributions is in correctly proved by acquiring a nearly ideal transient EHL solution. This method can be efficiently used to analyse dynamic film contact for some engineering objects, such as bearing, gear and wheel-rail link (water film in rainy days), etc.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 110 PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 310 A Fast Analytical Technique for Transient Elasto-Hydrodynamic Lubrication based on Acquisition of Contact Stiffness and Damping Distributions S.C. Zhu^1,2, D. Nelias² and W.H. Zhang¹ ¹State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu, Sichuan, China ²Université de Lyon, INSA-Lyon, LaMCoS UMR CNRS 5259, Villeurbanne, France doi:10.4203/ccp.110.310 purchase the full-text of this paper Full Bibliographic Reference for this paper S.C. Zhu, D. Nelias, W.H. Zhang, "A Fast Analytical Technique for Transient Elasto-Hydrodynamic Lubrication based on Acquisition of Contact Stiffness and Damping Distributions", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 310, 2016. doi:10.4203/ccp.110.310 Keywords: hydrodynamic lubrication, transient EHL problem, EHL stiffness distribution, EHL damping distribution. Summary In this paper, a new method is proposed to illustrate the transient elasto-hydrodynamically lubricated (EHL) problem. A steady-state solution of the EHL problem is obtained as the initial state of a dynamic load-increasing (or -decreasing) procedure. Based on the continuous acquisition of the EHL stiffness and damping distributions, dynamic mechanical behaviours of oil film are predicted, using a balance calculation of the load increment. Meanwhile, the availability of the EHL stiffness and damping distributions is in correctly proved by acquiring a nearly ideal transient EHL solution. This method can be efficiently used to analyse dynamic film contact for some engineering objects, such as bearing, gear and wheel-rail link (water film in rainy days), etc. purchase the full-text of this paper (price £22) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £85 +P&P)
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