关键词: 通风制动盘, 制动抖动, 热变形, 正交试验设计

Abstract: For the brake jitters of a ventilated brake disc, the orthogonal experimental design method was used to obtain the optimal horizontal combination of the structural parameters of the ventilated brake disc. The finite element method was used to simulate 15 cycles of braking. By analyzing the differences of thermal deformations between the front and rear brake discs before and after optimization, the sensitivity of each structural parameter to the thermal deformations of the brake disc was obtained. Then bench-test was carried out to verify the results of simulation. The results show that the sensitivity of the structural parameters of the ventilated brake disc to the brake jitters from high to low are as follows: thickness, cap height, angle of the neck, outer diameter of brake disc, inner diameter of brake disc, radius of the neck.The increasing of thickness cap height and angle of the neck induces the increasing of brake jitters, while the outer diameter of brake disc and inner diameter of brake disc increase, the brake jitter decreases.

Key words: ventilated brake disc, brake jitter, thermal deformation, orthogonal experimental design