• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2018, Vol. 54 ›› Issue (6): 93-101.doi: 10.3901/JME.2018.06.093

• 特邀专栏:大国重器:复兴之路上的轨道交通技术 • 上一篇    下一篇

基于旋转热源法和均布热源法的列车踏面制动温度场分析

张金煜, 虞大联, 林鹏   

  1. 中车青岛四方机车车辆股份有限公司国家高速动车组总成工程技术研究中心 青岛 266111
  • 收稿日期:2017-02-08 修回日期:2017-12-05 出版日期:2018-03-20 发布日期:2018-03-20
  • 通讯作者: 张金煜(通信作者),男,1981年出生,博士,高级工程师。主要研究方向为列车基础制动仿真、轮轨摩擦学。E-mail:zjy_2924837@163.com
  • 作者简介:虞大联,男,1968年出生,硕士,教授级高级工程师。主要研究方向为车辆动力学。E-mail:ydl@cqsf.com;林鹏,男,1982年出生,博士,高级工程师。主要研究方向为空气动力学。E-mail:linpeng@cqsf.com

Analysis of Temperature Field of Train Tread Braking Based on Rotating Heat Source Method and Uniformly Distributed Heat Source Method

ZHANG Jinyu, YU Dalian, LIN Peng   

  1. National Research Center of High-speed EMU Assembly Engineering Technology, CRRC Qingdao Sifang Co., Ltd., Qingdao 266111
  • Received:2017-02-08 Revised:2017-12-05 Online:2018-03-20 Published:2018-03-20

摘要: 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。

关键词: 均布热源法, 踏面制动, 温度场, 旋转热源法

Abstract: 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.

Key words: rotating heat source method, temperature field, tread braking, uniformly distributed heat source method

中图分类号: