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THERMAL－MECHANICAL COUPLING ANALYSIS OF SOLID BRAKE DISC IN REPEATED BRAKE BASED ON NON－AXISYMMETRIC THREE－DIMENSIONAL MODEL
Xuan Wu, Pyung Hwang, Yeung-bae Jeon
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Abstract
The disc brake used in the automobile is divided into two parts: a rotating axisymmetrical disc, and the stationary pads. The frictional heat, which is generated on the interface of the disc and pads, can cause high temperature during the braking process. Thermal stresses due to high temperature may induce surface cracks. The frictional heat source (the pads) is moving on the disc and the location is depended on time. In our study apply the heat flux on the working surface vary with the time and space variables θ, in order to simulate the friction heat behavior accurately when the brake working. The object of present work is determination of temperature distribution and thermal deformation in the solid disc by non-axisymmetric three-dimensional modeling with appropriate thermal boundary condition for the repeated brake.