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A method to achieve comparable thermal states of car brakes during braking on the road and on a high-speed roll-stand

A method to achieve comparable thermal states of car brakes during braking on the road and on a... A method to achieve comparable thermal states of car brakes during braking on the road and on a high-speed roll-stand The temperature of a brake friction surface influences significantly the braking effectiveness. The paper describes a heat transfer process in car brakes. Using a developed program of finite element method, the temperature distributions in brake rotors (disc and drum brake) of a light truck have been calculated. As a preliminary consistency criterion of the brake thermal state in road and roll-stand braking conditions, a balance of the energy cumulated in the brake rotor has been taken into account. As the most reliable consistency criterion an equality of average temperatures of the friction surface has been assumed. The presented method allows to achieve on a roll-stand the analogical thermal states of automotive brakes, which are observed during braking in road conditions. Basing on this method, it is possible to calculate the braking time and force for a high-speed roll-stand. In contrast to the previous papers of the author, new calculation results have been presented. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Transport de Gruyter

A method to achieve comparable thermal states of car brakes during braking on the road and on a high-speed roll-stand

Archives of Transport , Volume 22 (2) – Jan 1, 2010

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Publisher
de Gruyter
Copyright
Copyright © 2010 by the
ISSN
0866-9546
DOI
10.2478/v10174-010-0016-z
Publisher site
See Article on Publisher Site

Abstract

A method to achieve comparable thermal states of car brakes during braking on the road and on a high-speed roll-stand The temperature of a brake friction surface influences significantly the braking effectiveness. The paper describes a heat transfer process in car brakes. Using a developed program of finite element method, the temperature distributions in brake rotors (disc and drum brake) of a light truck have been calculated. As a preliminary consistency criterion of the brake thermal state in road and roll-stand braking conditions, a balance of the energy cumulated in the brake rotor has been taken into account. As the most reliable consistency criterion an equality of average temperatures of the friction surface has been assumed. The presented method allows to achieve on a roll-stand the analogical thermal states of automotive brakes, which are observed during braking in road conditions. Basing on this method, it is possible to calculate the braking time and force for a high-speed roll-stand. In contrast to the previous papers of the author, new calculation results have been presented.

Journal

Archives of Transportde Gruyter

Published: Jan 1, 2010

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