EFFECT OF THE TEMPORAL PROFILE OF THE FRICTION POWER ON THERMAL STRESSES DURING BRAKING | Zendy

A.A. Yevtushenko | Zendy; М. Kuciej | Zendy; Katarzyna Topczewska | Zendy

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EFFECT OF THE TEMPORAL PROFILE OF THE FRICTION POWER ON THERMAL STRESSES DURING BRAKING

Author(s) -

A.A. Yevtushenko,

М. Kuciej,

Katarzyna Topczewska

Publication year - 2017

Language(s) - English

Resource type - Conference proceedings

DOI - 10.15544/balttrib.2017.23

Subject(s) - mechanics , brake , heat flux , materials science , thermal conduction , rotor (electric) , thermal , finite element method , boundary value problem , disc brake , heat transfer , thermodynamics , physics , mechanical engineering , composite material , engineering , quantum mechanics , metallurgy

In this paper influence of the temporal profile of frictional heat flow density on the distributions of temperature and thermal stresses in a friction element during single braking was investigated. For this purpose a one-dimensional boundary-value heat conduction problem for a half-space body (which simulates a brake rotor) heated on the outer surface by the heat flux with different intensities was formulated and solved by means of Duhamel’s theorem. Solutions were obtained for ten temporal profiles of specific friction power, which are proportional to the intensity of frictional heat flow. Based on received transient temperature fields and Timoshenko’s model of thermal bending of a thick plate with unfixed edges, the analytical distributions of quasi-static thermal stresses in a friction element were found. Achieved solutions allow conducting numerical analysis of the distributions of temperature and thermal stresses in a brake rotor with different time profiles of the specific friction power.

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