Thermal State of Automotive Brakes after Braking on the Road and on the Roll-Stand

Zbigniew Lozia , Andrzej Wolff

Abstract

The temperature influences significantly the braking effectiveness. The paper describes consistency criterions of the brake thermal state in road braking conditions and on the roll-stand. As a result of the vehicle motion simulation, the time histories of the heat fluxes generated on the friction surface of the front and rear disc were determined. They were used as an input data for the model of the heat transfer process in disc brakes. The problem was solved by the use of the finite element method. Time histories of temperatures on the friction surfaces and in the material of the disc were 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 was assumed. As the most reliable consistency criterion an equality of average temperatures of the friction surface was assumed. The presented method allow to simulate on a roll-stand the thermal state of automotive brake which is observed during braking in road conditions. Basing on the method it is possible to calculate the test velocity, braking time and brake force.
Author Zbigniew Lozia (FT / DVMO)
Zbigniew Lozia,,
- Department of Vehicle Maintance and Operation
, Andrzej Wolff (FT / DVMO)
Andrzej Wolff,,
- Department of Vehicle Maintance and Operation
Journal seriesSAE Technical Papers, ISSN 0148-7191
Issue year1997
No971040
Conference1997 World SAE Congress and Exposition, Detroit, Michigan USA
ASJC Classification2209 Industrial and Manufacturing Engineering; 2310 Pollution; 2213 Safety, Risk, Reliability and Quality; 2203 Automotive Engineering
DOIDOI:10.4271/971040
Languageen angielski
Score (nominal)0
Score sourcejournalList
Publication indicators GS Citations = 11.0; Scopus SNIP (Source Normalised Impact per Paper): 1999 = 0.983
Citation count*11 (2020-09-25)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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