Analysis of Transient Wheel-rail Rolling Contact Behavior for Metro Tracks with Floating Fasteners

doi:10.3901/JME.2024.21.207

Abstract

Abstract: Floating fasteners, as a type of resilient fasteners, provide a low vertical stiffness for metro tracks by supporting the low jaw and web of the rail. However, they intensify the high-frequency wheel–rail interaction. To analyze the influence of flexibility of wheelset and track on the wheel–rail transient rolling contact behavior, three-dimensional finite element model of wheel–rail transient rolling contact for metro tracks with floating fasteners are established by ABAQUS. The model combines implicit and explicit algorithms of the FE method. The influence of wheelset flexibility on wheel–rail contact parameters is analyzed when the wheelset with traction force passed over the rail with smooth surface, dent and periodic irregularity. The contact parameters are mainly the wheel–rail transient contact force, contact patch and contact stress. The simulation results show that the influence of wheelset flexibility on the wheel–rail force is small when the rail surface is smooth. However, its influence on the wheel–rail contact patch and contact stress is obvious. Under an impulse excitation of the dent, the wheelset flexibility has a significant effect on the wheel–rail vertical forces at frequencies of 350–600 Hz, which is related to the reverse rotation and first-order bending modes of the wheel. The contact patch area and maximum contact stress of the rigid wheelset are about 59%–82% and 140%–162% for those of the flexible wheelset, respectively. Under an excitation of the periodic irregularity, the wheel–rail vertical forces above 580 Hz are affected only by the wheelset flexibility due to forced vibrations of the wheel–rail system.

Key words: metro track, floating fasteners, dynamic characteristics of wheelset and track, wheel-rail transient rolling contact, finite element method

CLC Number:

U270

YAO Xuedong, LI Wei, WEN Zefeng, ZHOU Zhijun, ZHOU Shenglu. Analysis of Transient Wheel-rail Rolling Contact Behavior for Metro Tracks with Floating Fasteners[J]. Journal of Mechanical Engineering, 2024, 60(21): 207-218.

References

[1] 李伟. 地铁钢轨波磨成因及其对车辆/轨道行为的影响[D]. 成都：西南交通大学，2015. LI Wei. Study on root cause of metro rail corrugation and its influence on behavior of vehicle–track system[D]. Chengdu：Southwest Jiaotong University，2015.
[2] 朱强强. 地铁先锋扣件轨道钢轨波磨形成机理初探[D]. 成都：西南交通大学，2018. ZHU Qiangqiang. A preliminary investigation into the causes of rail corrugation on subway track with Vanguard fasteners[D]. Chengdu：Southwest Jiaotong University，2018.
[3] 韦凯，梁迎春，张攀，等. 地铁浮轨式扣件减振效果的测试与分析[J]. 铁道工程学报，2016，33(5)：99-104. WEI Kai，LIANG Yingchun，ZHANG Pan，et al. Measurement and analysis of the vibration-attenuating effect of rail suspension fasteners on subway vibration [D]. Journal of Railway Engineering Society，2016，33(5)：99-104.
[4] 赵鑫，温泽峰，王衡禹，等. 三维高速轮轨瞬态滚动接触有限元模型及其应用[J]. 机械工程学报，2013，49(18)：1-7. ZHAO Xin，WEN Zefeng，WANG Hengyu，et al. 3D transient finite element model for high-speed wheel–rail rolling contact and its application[J]. Journal of Mechanical Engineering，2013，49(18)：1-7.
[5] 于淼，王卫东，刘金朝. 钢轨波磨区段高速轮轨瞬态滚动接触高频动态特性[J]. 中国铁道科学，2018，39(5)：58-66. YU Miao，WANG Weidong，LIU Jinchao. High frequency dynamic characteristics of high-speed wheel-rail transient rolling contact in rail corrugation section[J]. China Railway Science，2018，39(5)：58-66.
[6] 周志军，李伟，温泽峰，等. 采用GJ-Ⅲ型扣件地铁轨道的钢轨波磨形成机理[J]. 中国铁道科学，2022，43(3)：37-49. ZHOU Zhijun，LI Wei，WEN Zefeng，et al. Formation mechanism of rail corrugation on metro tracks with GJ-Ⅲ fastener[J]. China Railway Science，2022，43(3)：37-49.
[7] 王志强，雷震宇. 基于瞬态接触特性的科隆蛋扣件轨道波磨形成机理[J]. 清华大学学报，2023，63(11)：1844-1855. WANG Zhiqiang，LEI Zhenyu. Mechanism of corrugation on the track with Cologne egg fasteners based on transient contact characteristics [J]. Journal of Tsinghua University，2023，63(11)：1844-1855.
[8] TASSILLY E，VINCENT N. A linear model for the corrugation of rails[J]. Journal of Sound and Vibration，1991，150(1)：25-45.
[9] KNOTHE K L，GRASSIE S L. Modelling of railway track and vehicle/track interaction at high frequencies[J]. Vehicle System Dynamics，1993，22(3-4)：209-262.
[10] LI S G，Li Z L，NÚÑEZ A，et al. New insights into the short pitch corrugation enigma based on 3D-FE coupled dynamic vehicle–track modeling of frictional rolling contact[J]. Applied Sciences，2017，7(8)：807.
[11] MA C Z，GAO L，XIN T，et al. The dynamic resonance under multiple flexible wheelset–rail interactions and its influence on rail corrugation for high-speed railway[J]. Journal of Sound and Vibration，2021，498：115968.
[12] LI W，ZHOU Z J，ZHAO X，et al. Formation mechanism of short-pitch rail corrugation on metro tangent tracks with resilient fasteners[J]. Vehicle System Dynamics，2023，61(6):1524-1547.
[13] 姚学东，李伟，周志军，等. 柔性轮对作用下浮轨式扣件轨道动力特性分析[J]. 振动与冲击，2023，42(24)：42-50. YAO Xuedong，LI Wei，ZHOU Zhijun，et al. Analysis on dynamic characteristics of track with floating fasteners considering loading of flexible wheelsets[J]. Journal of Vibration and Shock，2023，42(24)：42-50.
[14] Abaqus User Guide，Version 6.14. Dassault Systèmes Simulia Corp.，2012.
[15] 关庆华，周业明，李伟，等. 车辆轨道系统的P2共振频率研究[J]. 机械工程学报，2019，55(8)：118-127. GUAN Qinghua，ZHOU Yeming，LI Wei，et al. Study on the P2 resonance frequency of vehicle track system[J]. Journal of Mechanical Engineering，2019，55(8)：118-127.
[16] 于淼. 高速铁路轨道—车辆系统高频瞬态仿真及波磨机理研究[D]. 北京：中国铁道科学研究院，2019. YU Miao. Transient simulation for high-speed track/vehicle system and study on rail corrugation[D]. Beijing：China Academy of Railway Science，2019.
[17] ZHAO X，LI Z L. The solution of frictional wheel-rail rolling contact with a 3D transient finite element model: Validation and error analysis[J]. Wear，2011，271(1)：444-452.
[18] BAEZA L，FAYOS J，RODA A，et al. High frequency railway vehicle–track dynamics through flexible rotating wheelsets[J]. Vehicle System Dynamics，2008，46(7)：647-659.