Analysis of the Thermal Behavior of a Ventilated Disc Brake

M. Kaffel(1*), H. Kchaou(2), M. Baccar(3)

(1) National Engineering School of Sfax (ENIS), Tunisia
(2) National Engineering School of Sfax (ENIS), Tunisia
(3) National Engineering School of Sfax (ENIS), Tunisia
(*) Corresponding author

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The major problem limiting the lifespan of a brake is the increasing of the level of the temperature of the disc thus modifying its thermal and mechanical characteristics.  Concerning this effect, this study is devoted to the development of a computer code necessary for the determination of the field of temperature in all the volume of a disc brake.  The three-dimensional calculations carried out in transient mode on the aired disc brake, are founded on the method of discretization to finite volume, and on the said technique, of sliding boundary condition, which was developed to allow us to take into account the variation of the relative position of the contact disc-pad, following the rotation of the disc.  The numerical results obtained, represent the fields of temperature in various sections of the disc for the two types of braking, the braking of stopping and the braking of maintaining, and put forward the influence of the variation of the parameters of braking such as:  initial speed, deceleration, mass of the vehicle, and air of the surface of contact.
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Disc Brake; Finite volume; Frictional Heat; Sliding Boundary Condition; Temperature field

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