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

摘要： 针对某通风制动盘制动抖动情况，采用正交试验设计方法，得到了通风制动盘各结构参数的最优水平组合。采用有限元法模拟制动盘15次循环制动，对比分析优化前后制动盘的热变形差异，得到各结构参数对制动盘热变形影响的敏感性，并利用台架试验验证了仿真分析的有效性。结果表明：通风制动盘各结构参数对制动抖动的影响敏感性由高到低顺序为盘厚、盘帽高度、颈部角度、制动盘外径、制动盘内径、颈部半径；盘厚、盘帽高度、颈部角度越大且制动盘外径及制动盘内径越小，制动抖动越小。

关键词: 通风制动盘, 制动抖动, 热变形, 正交试验设计