The present research contributes to dynamic and thermal analysis of braking phenomenon in a vehicle. Analytical model of brake system is verified through test and numerical results using Newmark integration scheme. A very good agreement between numerical and test results has been observed. Numerical results of both dynamic and thermal analysis have been verified by the data taken from actual road tests. The comparison between numerical and experimental results revealed that the model developed for both dynamic and thermal analyses of vehicle braking system having disc brakes at the front axle and drum brakes at the rear can produce very reliable and consistent results to such an extent that it is replaceable with road tests. In addition, the proposed method of analysis is economical and fast as well as very reliable since the total computational time is about three minutes. In addition, optimal pressure values for which the rear tyres do not go to lockup have been obtaied. Based on these pressures, dynamic and thermal analyses have been repeated and the results obtained have been composed with those found by a model, which was developed previously according to experimental data from a car. The results show that for optimum pressure, a higher braking performance and a shorter stopping distance are reached. In summary, major contribution of the present research are the development of cost effective approach to investigate brake system parameters; validation of analytical model through a very good agreement between numerical and test results; and in addition, optimal pressure values for which the rear tyres do not go to lockup have been obtained. Further research is considered to improve the present system examining wear and noise issues in vehicle brake system.
Validation of analytical model of vehicle brake system
Validierung eines analytischen Modells für ein Fahrzeugbremssystem
International Journal of Vehicle Design ; 35 , 4 ; 331-348
2004
18 Seiten, 7 Bilder, 2 Tabellen, 21 Quellen
Aufsatz (Zeitschrift)
Englisch
Bewegungsgleichung , Pkw (Personenkraftwagen) , Bremsvorgang , Fahrzeugbremse , theoretisches Modell , Bremsscheibe , Rechnersimulation , Simulationsmodell , numerisches Verfahren , Bremstrommel , Bremskraft , Drehmoment , Reibung , Bremsweg , Trommelbremse , Scheibenbremse , Validierung , Anwendung im Fahrzeugbau
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