Alternative calculation on transient elasto-hydrodynamic lubrication
Abstract
Purpose
The purpose of this study is to propose a new method to solve transient elasto-hydrodynamic lubrication (EHL) problem.
Design/methodology/approach
First, the steady-state EHL solution is modified so that the elastic deformation theory is combined with oil film stiffness distribution instead of steady-state Reynolds equation. Second, subsequent dynamic EHL procedure develops, recursively using transient distributed oil film stiffness and damping, where each time-marching solution is iteratively searched by ensuring both oil film force growth and elastic deformation update for each load increment.
Findings
This method increases calculation speed and provides both distributed EHL stiffness and damping for transient regimes.
Originality/value
This method is of interest for fast applications such as rolling bearings or gears.
Keywords
Acknowledgements
National Key R&D Plan(Security techniques on High speed train-analysis on train security and accessment on comprehensive safety, 2016YFB 1200401-102A), China Railway(PHM analysis on D-Series High-Speed Train, 2016J007-B), NSFC (Vibration behaviour, vibration failure and evaluation research on high speed train, U1234208), CRRC Changchun Railway Vehicles (Key parts vibration intensity of CRH380 (BL)), TPL-SWJTU (Axle-box bearing’s matching research with high speed train and its exploitation,TPL1506), and China Scholarship Council.
Citation
Zhu, S., Zhang, W. and Nelias, D. (2018), "Alternative calculation on transient elasto-hydrodynamic lubrication", Industrial Lubrication and Tribology, Vol. 70 No. 2, pp. 423-431. https://doi.org/10.1108/ILT-10-2017-0280
Publisher
:Emerald Publishing Limited
Copyright © 2018, Emerald Publishing Limited