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Calculation of Friction Characteristics of Disc Brakes Used in Repetitive Short-Term Braking Mode

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Abstract

The numerical solution for the system of equations of heat friction dynamics (HFD) is obtained for the pad-disc tribosystem for use in intermittent braking mode (RST). The system of HFD equations is formulated, considering the temperature dependence of mechanical and thermal physical properties of materials, as well as the friction coefficient. The pattern of the perfect thermal contact of two sliding layers with frictional heat generation taken into account is chosen as a calculation model. The numerical analysis of the metal ceramic pad-cast iron disc friction pair is made. The RST mode consisting of three full (braking-acceleration) cycles and one incomplete (braking) cycles is studied. The change at each braking in the interconnected flashpoint, average temperature of the friction region, volumetric and maximal temperatures of the tribosystem, sliding speed, specific power, and friction coefficient is investigated.

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Funding

This work was financially supported by the National Science Center of Poland, project no. 2017/27/B/ST8/01249.

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Correspondence to A. Yevtushenko.

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Translated by S. Kuznetsov

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Yevtushenko, A., Kuciej, M. Calculation of Friction Characteristics of Disc Brakes Used in Repetitive Short-Term Braking Mode. J. Frict. Wear 41, 509–516 (2020). https://doi.org/10.3103/S1068366620060069

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  • DOI: https://doi.org/10.3103/S1068366620060069

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