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Roller bearing dynamics under transient thermal-mixed non-Newtonian elastohydrodynamic regime of lubrication

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journal contribution
posted on 09.03.2015, 15:15 by Mahdi Mohammadpour, P.M. Johns-Rahnejat, Homer Rahnejat
The paper describes a combined tribodynamics analysis (dynamics and contact tribology) of cylindrical roller bearings of a heavy duty truck transmission under high applied loads. The dynamic analysis provides the transient variations in contact load. It also determines the vibration spectrum of the bearing as well as that of contact dynamics. It is shown that with sufficient preloading and/or interference fitting a widely spread loaded region results, which reduces bearinginduced vibration. The transient tribological analysis, including thermal analysis with a novel and realistic lubricant inlet boundary condition demonstrates that non-Newtonian mixed elastohydrodynamic regime of lubrication is prevalent, but with reduced friction compared with unrealistic dry Coulombic friction, which is often assumed in literature.

Funding

The authors wish to acknowledge the support of Wolfson School’s PhD Scholarship Scheme.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Part K: Journal of Multi-body Dynamics

Citation

MOHAMMADPOUR, M., JOHNS-RAHNEJAT, P.M. and RAHNEJAT, H., 2015. Roller bearing dynamics under transient thermal-mixed non-Newtonian elastohydrodynamic regime of lubrication. Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics, forthcoming.

Publisher

SAGE Publications / © IMechE

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2015

Notes

This article was published in the serial, Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics [SAGE Publications / © IMechE]. The definitive version is available at: http://dx.doi.org/10.1177/1464419315569621

ISSN

1464-4193

Language

en