Optimization of an Automotive Disc Brake Cross section with Least Thermal Deformation by Taguchi Method
Optimum cross sectional shape of an automotive disc brake was developed based on FEM thermal analyses and the Taguchi method. Frictional heat flux and convection heat transfer coefficients were first calculated using equations and applied to the disc to calculate accurate temperature distribution and thermal deformations under realistic braking conditions. Maximum stress was generated in an area with highest temperature under pads and near the hat of ventilated disc and vanes. The SN ratio from Taguchi method and MINITAB was applied to obtain the optimum cross sectional design of a disc brake on the basis of thermal deformations. The optimum cross section of a disc can reduce thermal deformation by 15.2 compared to the initial design.