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Tribological investigation of truncated thermo-elastohydrodynamic elliptical point contacts in high performance transmissions

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conference contribution
posted on 05.10.2016 by Vishak Elisaus, Mahdi Mohammadpour, Stephanos Theodossiades, Homer Rahnejat
In high performance cars, light-weighting is a major development driver. Consequently, the transmission can be particularly compact whilst being subject to large variations in torque and power. Pitch line velocities of up to 52 m/s and contact pressures of up to 3 GPa are routinely encountered under race conditions. Contact patch asymmetry due to angular misalignments between input and output shafts leads to the generation of high contact edge pressures, with the potential of inducing fatigue spalling, which can be exacerbated by observed and yet unexplained contact footprint truncation. Crowning is widely used as a palliative measure for these undesired conditions. The paper provides a time-efficient analytical method to solve the non-Newtonian mixed thermo-elastohydrodynamic (TEHD) problem under the extreme prevalent conditions in such high performance vehicle transmission systems. The approach expounded in this paper for the extreme tribological conditions has not hitherto been reported in literature.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

PMC2016, Powertrain Modelling and Control

Citation

ELISAUS, V. ...et al., 2016. Tribological investigation of truncated thermo-elastohydrodynamic elliptical point contacts in high performance transmissions. Presented at the 3rd Biennial International Conference on Powertrain Modelling and Control (PMC 2016), Loughborough University, 7-9th Sept.

Publisher

© the Authors

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/

Acceptance date

01/09/2016

Publication date

2016

Notes

This is a conference paper.

Publisher version

Language

en

Location

Loughborough University

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