中文摘要：

为了模拟城轨车车辆运行时踏面在制动过程中的温升情况,建立了城轨车车轮的三维有限元模型,基于传热学和有限元理论,对城轨车车轮的温度场进行模拟仿真,并通过对城轨车实际制动过程的分析,选择设计方案中的车轮制动参数,在初速度为90 km/h前提下,针对车轮初始温度为30℃时,对两种制动工况（两次紧急制动与全程往返空气制动）,进行了某型城轨车车辆动车车轮的热容量计算.

英文摘要：

In order to simulate the urban rail vehicle wheel tread temperature rise in the process of braking operation,three dimensional finite element model of urban rail vehicle wheel is established based on the heat transfer and finite element theory. Through the analysis of actual braking process of urban rail vehicle,the choice of parameters of wheel brake design is determined. Under the promise of the initial velocity of 90 km / h,the initial wheel temperature of 30 degrees,thermal capacity of the urban rail vehicle motor wheel on two kinds of braking condition（ two emergency braking and the entire round-trip air braking） were calculated.