Numerical and analytical investigation of temperature distribution in a brake drum with simulated defects
by Adrian Ilinca, Florin Ilinca, Boumediene Falah
International Journal of Vehicle Design (IJVD), Vol. 26, No. 2/3, 2001

Abstract: One of the most important factors affecting brake performance is the temperature of the drum-lining contact surface, as excessive heating will drastically reduce the friction coefficient. In this paper, we investigate the temperature distribution in a brake drum by emphasising the effect of a reduced contact area with the lining as a result of wear or geometric deformation. Three models of varying degree of complexity are used for the analysis. An empirical formula, available in the open literature, has been expanded to accurately predict the transient variation of drum temperature. Its calibration and validation have been performed with a one-dimensional and an axi-symmetric model based on finite element discretisation with unstructured grids. The physical model is based on the transient energy equation and accounts for convective and radiative heat transfer. Influence of defects on the drum-lining interface is also simulated and brake performance is evaluated for this non-ideal case using the three models. This approach provides an accurate and effective tool for the heat transfer analysis in the brake drum and, therefore, for the design of brake foundations.

Online publication date: Fri, 15-Aug-2003

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