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A thermo-frictional tyre model including the effect of flash temperature

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journal contribution
posted on 17.07.2018 by Georgios Mavros
A new tyre model is developed that can predict the influence of both macroscopic and local flash temperature on tyre force generation. The model comprises two heat-transfer solvers. A macroscopic solver calculates the 3D temperature distribution across the tread and sidewall at a resolution of a few millimetres. A separate flash-temperature solver calculates the local hot-spot temperature distribution at the macro-asperity tyre-road contact interface at a resolution of micrometres. The two heat-transfer solvers are coupled with a structural model for the calculation of tyre forces and the sliding speed distribution along the contact patch. The sliding speed distribution feeds into the flash-temperature model and the local coefficient of friction is found as a function of sliding speed, flash temperature, normal pressure, road roughness and the complex modulus of rubber. The proposed tyre model is the first to include the effect of a changing macroscopic temperature distribution on the build-up of the local flash temperature. And to account for road-tread conduction at the macro-asperity contact interface. The model is applicable for identifying the friction envelope and optimum temperature range for tyres on roads with known roughness. This is important in motorsport where knowledge of grip offers a competitive advantage.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

Vehicle System Dynamics

Pages

1 - 31

Citation

MAVROS, G., 2018. A thermo-frictional tyre model including the effect of flash temperature. Vehicle System Dynamics, 57(5), pp.721-751.

Publisher

© Taylor and Francis

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

28/05/2018

Publication date

2018-06-18

Notes

This is an Accepted Manuscript of an article published by Taylor & Francis in Vehicle System Dynamics on 18 Jun 2018, available online: https://doi.org/10.1080/00423114.2018.1484147

ISSN

0042-3114

eISSN

1744-5159

Language

en

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