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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/16936

Title: Roller bearing dynamics under transient thermal-mixed non-Newtonian elastohydrodynamic regime of lubrication
Authors: Mohammadpour, Mahdi
Johns-Rahnejat, P.M.
Rahnejat, Homer
Keywords: Roller bearings
Dynamic analysis
Bearing vibration
Thermal mixed-elastohydrodynamics
Non-Newtonian friction
Issue Date: 2015
Publisher: SAGE Publications / © IMechE
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.
Abstract: 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.
Description: 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
Sponsor: The authors wish to acknowledge the support of Wolfson School’s PhD Scholarship Scheme.
Version: Accepted for publication
DOI: 10.1177/1464419315569621
URI: https://dspace.lboro.ac.uk/2134/16936
Publisher Link: http://dx.doi.org/10.1177/1464419315569621
ISSN: 1464-4193
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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