• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2018, Vol. 54 ›› Issue (4): 132-141.doi: 10.3901/JME.2018.04.132

• 轮轨接触关系 • 上一篇    下一篇

基于弹性模型的高速列车曲线通过时轮轨接触特性研究

杨光1,2, 任尊松1   

  1. 1. 北京交通大学载运工具先进制造与测控技术教育部重点实验室 北京 100044;
    2. 中国铁道科学研究院金属及化学研究所 北京 100081
  • 收稿日期:2017-04-26 修回日期:2017-12-29 出版日期:2018-02-20 发布日期:2018-02-20
  • 通讯作者: 任尊松(通信作者),男,1969年出生,博士,教授,博士研究生导师。主要研究方向为车辆系统动力学,结构强度与可靠性。E-mail:zsren@bjtu.edu.cn
  • 作者简介:杨光,男,1989年出生,博士研究生。主要研究方向为车辆系统动力学。E-mail:12116327@bjtu.edu.cn
  • 基金资助:
    国家自然科学基金(51575036)和国家重点研发计划课题(2016YFB1200403)资助项目

Wheel/rail Contact Performance on Curved Track of High-speed EMU with Elastic model

YANG Guang1,2, REN Zunsong1   

  1. 1. Key Laboratory of Vehicle Advanced Manufacturing, Measuring and Control Technology(Beijing Jiaotong University), Ministry of Education, Beijing 100044;
    2. Metals & Chemistry Research Institute, China Academy of Railway Sciences, Beijing 100081
  • Received:2017-04-26 Revised:2017-12-29 Online:2018-02-20 Published:2018-02-20

摘要: 为研究高速列车曲线通过时的轮轨接触几何关系、蠕滑性能及磨耗情况,基于我国某型高速动车组,利用有限元和多体动力学方法,考虑轮对旋转运动,建立高速列车车辆系统弹性模型,并通过数值仿真,得到高速列车曲线通过时,不同曲线参数影响下,轮轨接触点横向位置、轮轨蠕滑力以及轮轨磨耗指数等的变化规律。结果表明,相对于刚性模型,利用车辆系统弹性模型仿真能够更加真实反映轮对旋转运动时的轮轨接触状态,也更符合高速列车实际曲线通过情况。高速列车曲线通过速度和线路横向不平顺激扰幅值增大均会显著加剧轮对横向位移、轮轨接触点横向位置、轮轨横向蠕滑力等轮轨系统横向相互作用,且会加大轮轨磨耗;曲线半径和超高增大对于曲线轨道外侧轮轨磨耗影响较大,但对于轮轨系统横向相互作用影响较小。将通过速度为350 km/h的7 000 m半径曲线超高设置为170 mm,可有效平衡内、外侧轮轨磨耗,列车降速通过则会加剧曲线内侧轮轨磨耗。

关键词: 轮轨接触, 磨耗, 曲线通过, 蠕滑力

Abstract: In order to study the wheel-rail contact geometry relationship, wear and creep properties when the high-speed train passing curves, an elastic model of vehicle system with rotation wheelsets is established in this article by the finite elements method and multi-body dynamics method. Through numerical simulation, the variations of contact points lateral position, creep force and abrasion of wheel-rail were obtained while the vehicle pass curves in different parameters. The results show that, compared with the rigid model, the elastic vehicle system can more accurately reflect wheel/rail contact performance with rotation wheelsets and it was more close to the actual situation of high speed EMU curve-passing. The wheel-rail lateral interactions such as lateral displacement of wheelset, lateral position of wheel/rai contact points, creep force and wear are more significantly augmented as the increase of the curve-passing speed and the track irregularity amplitude. The increases of super elevation and radius of curve track have larger influence on the abrasion of outside wheel/rail in curve track than the wheel/rail lateral interactions. The elevation of curve track with 7 000 m in radius can be set as 170 mm when the passing speed is 350 km/h to balance the abrasion. The wheel/rail abrasion of inner side in curve track will aggravate as the passing speed decreased.

Key words: abrasion, creep force, curve-passing, wheel-rail contact

中图分类号: