• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2021, Vol. 57 ›› Issue (22): 296-304.doi: 10.3901/JME.2021.22.296

• 运载工程 • 上一篇    下一篇

扫码分享

考虑接触热阻的高速列车制动盘热机耦合行为分析

吕雪梅, 王曦, 罗明生   

  1. 北京交通大学机械与电子控制工程学院 北京 100044
  • 收稿日期:2020-12-10 修回日期:2021-06-22 出版日期:2021-11-20 发布日期:2022-02-28
  • 通讯作者: 王曦(通信作者),男,1976年出生,博士,教授,博士研究生导师。主要研究方向为结构疲劳强度及可靠性。E-mail:wangxi@bjtu.edu.cn
  • 作者简介:吕雪梅,女,1996年出生。主要研究方向为制动盘热机耦合行为。E-mail:18121339@bjtu.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(U1834202)。

Analysis of Thermal-mechanical Coupling Behavior of Brake Disc of High Speed Trains Considering Thermal Contact Resistance

Lü Xuemei, WANG Xi, LUO Mingsheng   

  1. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044
  • Received:2020-12-10 Revised:2021-06-22 Online:2021-11-20 Published:2022-02-28

摘要: 接触界面间存在的接触热阻对制动盘内部热流传递过程有重要影响,进而影响制动盘热机耦合仿真分析的准确性。通过建立考虑接触热阻的有限元模型,结合制动台架试验,系统分析某高速列车轮装制动盘在紧急制动过程中的温度分布、盘面变形、螺栓载荷以及螺栓孔边应力等热机耦合行为。结果表明,选定的接触热阻模型得到的仿真结果与台架试验结果在较大的速度范围内吻合较好。制动系统内的温度梯度导致制动盘体产生较大的热应力并发生离面变形,是导致螺栓载荷增大的主要原因。制动盘面螺栓孔边沿制动盘半径方向的0°和180°位置附近的周向应力变化量较大,且处在较高的平均应力水平,是最容易产生制动热疲劳裂纹的两个方向。

关键词: 接触热阻, 制动盘, 热机耦合行为, 螺栓载荷

Abstract: In the high voltage applications of microelectronics and micro-mechanics, such as micro robots, soft actuators, skin electronics, micro sensors, integrated electronic circuits and so on, energy storage/supply devices with high output voltage are urgently needed. In recent years, high voltage micro-supercapacitors(HVMSCs), acting as power supply devices and due to their advantages of miniaturization, portability, flexibility, high cycle life span and high specific power/energy density, have been widely used in microcircuit systems, which can meet high voltage output and energy supply. In addition, HVMSCs can be used as energy storage devices to replace the large electrolytic capacitors and batteries, making electronic products more likely to be integrated construction, high density and miniaturization. According to the existing research, the increase on operating voltage window of MSCs can significantly improve the output energy density of MSCs, and further expand its application. Therefore, how to prepare all solid-state HVMSCs from the aspects of materials, structures and manufacturing methods has become a research hotspot. Based on this, the charge storage mechanism and electrochemical performance characteristics of MSCs are surveyed firstly. Secondly, the implementation principles on high potential window of MSCs are analyzed. Then, the manufacturing methods of HVMSCs are concluded in detail, comprising the preparation of electrode materials with high voltage (carbon-based materials, transition metal oxides,conductive polymers and composite electrode materials) and the manufacturing of high-voltage packaging structures (laser processing, inkjet printing, 3D printing, screen printing, roll to roll printing and mask coating). In addition, the applications of HVMSCs in energy storage power devices, flexible sensors and wearable devices are summarized. Finally, based on comprehensive investigation in research status of HVMSCs, the research trend and development of HVMSCs in high voltage fields, such as wearable and portable electronic devices, is prospected.

Key words: contact thermal resistance, brake disc, thermal-mechanical coupling behavior, bolt load

中图分类号: