实心车轮的有限元数值模型能较好地模拟闸瓦制动操作 ,基于实际试验进行的分析能对由特别严重的紧急制动引起的残余应力水平 (该应力由差温淬火及连续回火热处理产生 )的变化量进行估算。结果揭示了主要制动参数 (压力和时间 )及车轮制动以前受热情况对残余应力变化量的影响。最后 ,采用近似的方法 ,在计算应力水平的基础上 ,并通过把实际的特定线路引入模型 ,进行了零件的热疲劳强度校验。结果表明 :试验车轮具有很大的安全余量 ,但特别严重的紧急制动将大幅度改变由热处理产生的残余应力 ,使其向拉应力方向转变 ,而使车轮出现危险 The finite element numerical model of the solid wheel can simulate the braking operation of the brake shoe well. The analysis based on the actual test shows that the residual stress level caused by the severe emergency brake (the stress is controlled by differential temperature quenching and continuous tempering Generated) changes in the amount of estimation. The results revealed the effects of the main braking parameters (pressure and time) and the previous heating of the wheel brake on residual stress variation. Finally, the approximate method is used to check the thermal fatigue strength of the part based on the calculation of the stress level and by introducing the actual specific line into the model. The results show that the test wheels have a great margin of safety, but particularly severe emergency braking will significantly change the residual stress caused by the heat treatment, causing it to shift in the direction of tensile stress, leaving the wheels at risk