Received 01.02.2022
Revised 17.05.2022
Accepted 14.06.2022
Retrieved from Iss. 111, 2022
Pages 252 -259
Abstract
The concepts of frictional characteristic of the brake mechanism and frictional characteristic of the friction pair of the brake mechanism, which are necessary for the calculation of the real braking properties of vehicles, are considered. An experimental device has been developed to determine the influence of such destabilizing factors as temperature, sliding speed and contact pressure on the mentioned characteristics. A method for obtaining polynomial models of the third order to determine the effect of temperature, sliding speed and contact pressure on the coefficient of friction in the friction pairs of brake mechanisms is proposed. The technique is suitable for cases when the second-order models inadequately describe the effect of these destabilizing factors on the coefficient of friction in the friction pairs of brake mechanisms.
Keywords:
brake mechanisms, friction pairs, coefficient of friction, polynomial model of the third orderDemianiuk V.A. Friktsionnaya kharakteristika tormoznogo mekhanizma / V.A. Demianiuk // Vestnik lvov. politekhn. in-ta № 146. Tekhnologiya mashinostroeniya y dinamicheskaya prochnost mashin. – Lvov: Vyshcha shkola. Izd-vo pri lvov. gos. un-te, 1980. – pp. 40–42. [in Russian].
Demianiuk V.A. Eksperimentalni doslidzhennia friktsiinykh kharakteristik galmovykh mekhanizmiv ta ikh par tertia / V.A. Demianiuk // Sb. nauch. trud. “Avtomobilnyi transport”. – Kharkov: 2001. – Vyp. 7–8. – pp. 39–41. [in Ukrainian].
Razdorskii V.V. Poluchenie modeli ob”ekta v vide polnogo polinoma tret’ego poryadka / V.V. Razdorskii, V.D. Chalyi, Yu.I. Yatsenko // Inzhenerno–matematicheskie metody v fizike i kibernetike. – M.: Atomizdat. – 1973. – Vyp. 3. – pp. 105–109. [in Russian].
Shigoliev B.M. Matematicheskaya obrabotka nablyudenii. – M.: Nauka. – 1969. – 344 p. [in Russian].
Zavadskii Yu.V. Planirovanie eksperimenta v zadachakh avtomobilnogo transporta. – M.: MADI, 1978. – 153 p. [in Russian].