中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

Journal of Chongqing Jiaotong University(Natural Science) ›› 2023, Vol. 42 ›› Issue (4): 32-39.DOI: 10.3969/j.issn.1674-0696.2023.04.05

• Transportation+Big Data & Artificial Intelligence • Previous Articles    

Cause of Rail Corrugation in the Small Radius Curve Cologne Egg Fastener Section

QI Wei1,LIU Mei1,CHENG Zhi2,LI Tong2,CUI Xiaolu1,2   

  1. (1.Chongqing Rail Transit (Group) Co., Ltd., Chongqing 401120, China; 2. School of Mechatronics & Vehicle Engineering, Chongqing Jiaotong University, Chongqing 400074, China)
  • Received:2021-07-13 Revised:2021-12-13 Published:2023-06-12

小半径曲线科隆蛋扣件区段钢轨波磨成因研究

漆伟1,刘美1,程梽2,李童2,崔晓璐1,2   

  1. (1. 重庆市轨道交通(集团)有限公司,重庆 401120;2. 重庆交通大学 机电与车辆工程学院,重庆 400074)
  • 作者简介:漆 伟(1973—),男,重庆人,正高级工程师,主要从事跨座式单轨车辆动力学、弓网/轮轨摩擦方面的工作。E-mail:18323935637@163.com 通信作者:崔晓璐(1990—),女,山东济南人,教授,博士,主要从事轮轨摩擦学方面的研究。E-mail:cui_xiaolu@foxmail.com
  • 基金资助:
    国家自然科学基金项目(52275176,51805057);中国博士后科学基金项目(2019M663889XB);重庆市基础研究与前沿探索项目(CSTB2022NSCQ-MSX1542);重庆市教委科学技术研究项目(KJZD-K202100703)

Abstract: Combined with the rail corrugation of the inner rail in the small radius curve Cologne egg fastener section found in the field test, the cause of the rail corrugation was studied based on the theory of wheel-rail friction self-excited vibration. First of all, a dynamic model of the vehicle-track system was established according to the filed investigation, and the corresponding finite element model of the bogie-wheelset-rail system was established based on the dynamic model. Then, the frictional self-excited vibration characteristics of the wheel-rail system was studied by complex eigenvalue analysis. Finally, the control variable method was adopted to investigate the influence of primary suspension vertical stiffness damping and Cologne egg fastener stiffness damping on the frictional self-excited vibration of the wheel-rail system. The research results show that the frictional self-excited vibration of the wheel-rail system caused by the saturated creep force between the guide wheelset and the rail is the main cause of rail corrugation in the small radius curve Cologne egg fastener section. The vertical stiffness and damping of the primary suspension in the bogie-wheelset-rail system have little influence on the frictional self-excited vibration of the wheel-rail system, while the Cologne egg fastener parameters have obvious influence on the frictional self-excited vibration of the wheel-rail system. As the vertical stiffness of the fastener increases, the frictional self-excited vibration of the wheel-rail system shows a trend of first decreasing and then increasing. The wheel-rail system has the least possibility of generating frictional self-excited vibration when the vertical stiffness of the fastener is 20 MN/m. At the same time, increasing the vertical stiffness of the fastener can suppress the frictional self-excited vibration of the wheel-rail system to some extent.

Key words: railway engineering; frictional self-excited vibration; Cologne egg fastener; rail corrugation; dynamic analysis; complex eigenvalue analysis

摘要: 结合现场测试发现的小半径曲线科隆蛋扣件区段内轨的钢轨波磨现象,基于轮轨摩擦自激振动理论研究了该波磨现象的成因。首先,结合现场调研建立了车辆-轨道系统的动力学模型,根据动力学模型建立了相应的转向架-轮对-钢轨系统有限元模型。然后采用复特征值分析研究了轮轨系统的摩擦自激振动特性。最后采用控制变量法研究了一系悬挂垂向刚度阻尼和科隆蛋扣件刚度阻尼对轮轨系统摩擦自激振动的影响规律。研究结果表明:导向轮对与钢轨间的饱和蠕滑力引起的轮轨系统的摩擦自激振动是诱导小半径曲线科隆蛋扣件区段钢轨波磨的主要成因。转向架-轮对-钢轨系统中一系悬挂的垂向刚度和阻尼对轮轨系统摩擦自激振动的影响较小,而科隆蛋扣件参数对轮轨系统摩擦自激振动的影响较为明显。随扣件垂向刚度的增加,轮轨系统的摩擦自激振动呈现先减小后增大的趋势。扣件垂向刚度为20 MN/m时轮轨系统摩擦自激振动发生的可能性最小,同时增大扣件的垂向阻尼可以一定程度抑制轮轨系统的摩擦自激振动。

关键词: 铁道工程;摩擦自激振动;科隆蛋扣件;钢轨波磨;动力学分析;复特征值分析

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