针对列车踏面制动，分别基于旋转热源法和均布热源法建立了温度场计算模型。在包含匀减速制动、停止、匀加速启动和匀速运行四个阶段的一个基本制动工况下，选取车轮踏面以及踏面以下1 mm和2 mm处三个节点作为分析对象，对比了旋转热源法和均布热源法计算得到的温度变化曲线。同时考察了不同闸瓦接触面积、不同制动功率以及连续五个基本制动工况条件下，旋转热源法和均布热源法计算得到的上述三个节点温度变化曲线的变化规律及差异性。计算结果表明，对于踏面上的节点，旋转热源法与均布热源法计算得到的温度值及其变化特性存在很大的差异，但随着距离踏面深度的增加，两种计算方法得到的温度值差异迅速减小，在2 mm处可近似认为相同。此外在连续制动条件下，某一次制动中旋转热源法与均布热源法计算结果的差异性与之前的制动无关。
The temperature field model of the train tread braking is established based on the rotating heat source method and uniformly distributed heat source method. Under the basic braking condition that contains uniform deceleration braking, stopping, uniform acceleration starting and uniform speed running, the temperature change curves of the three points, which locate on the tread, 1 mm and 2 mm below the tread respectively, are calculated based on the rotating heat source method and uniformly distributed heat source method. At the same time, under the conditions of different shoe contact areas, different braking power and continuous five basic braking, the variation rules of the temperature change curves of the three points based on the two heat source loading methods are investigated. The calculation results show that for the point on the tread, the calculated temperature and the change characteristics based on the two heat source loading methods are quite different. However with the increase of the distance below the tread, the calculated temperature difference based on the two heat source loading methods decreases rapidly, and for the point 2 mm below the tread, the difference can be approximately ignored. In addition, under the condition of continuous braking, the calculated temperature difference of the three points in a certain braking based on the two heat source loading methods is not related to the previous braking.
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