The vibration and transmission characteristics of track components during vehicle operation is a complex issue. To address this issue, this paper proposes a flexible wheelset-damped track-tunnel-soil model that considers the interaction between the flexible wheelset and the rail. Using field measurements and the developed model, this study investigates the vibration characteristics of track components and explores the influence of fastener stiffness and damping pad stiffness on track vibration and vibration transfer characteristics between components from an energy perspective, using track spectrum power flow as the evaluation index. The results demonstrate that the model considering wheel-rail coupling can more comprehensively reflect the vibration characteristics of the track during train operation. Compared to fasteners with lower stiffness, damping pads with lower stiffness can reduce track vibration in a wider frequency range. Lower fastener stiffness reduces the transmission of vibration in 50∼2000 Hz, while lower damping pad stiffness reduces the transmission of vibrations in 1∼2000 Hz.
BlancoBGil-NegreteNKariL, et al. (2022) On the correction of rail accelerations predicted by numerical track models based on Timoshenko beam theory. Vehicle System Dynamics60(6): 1993–2017.
2.
CaiXPWangQHLiDC, et al. (2020) Theoretical study of long elastic sleeper track to reduce vibrations induced by subway trains. Proceedings of the Institution of Mechanical Engineers, Part F. Journal of Rail and Rapid Transit234(5): 538–549.
3.
ClarkRADeanPAElkinsJA, et al. (1982) An investigation into the dynamic effects of railway vehicles running on corrugated rails. Journal of Mechanical Engineering Science24(2): 65–76.
4.
FuN (2018) Study on Power Flow Theory and Application of High-Speed Railway Track with Anti-vibration Structure. Southwest Jiaotong University.
5.
FuNLiCHYangRS, et al. (2018) Damping performance of double-block ballastless damping track in high-speed railway. Journal of Central South University, 49 (2): 502–509.
6.
Giner-NavarroJMartínez-CasasJDeniaF, et al. (2018) Study of railway curve squeal in the time domain using a high-frequency vehicle/track interaction model. Journal of Sound and Vibration, 431: 177–191.
7.
GoodwinMJ (1984) Dynamics of railway vehicle systems. Journal of Mechanical Working Technology14(2):245–247.
8.
HertzBH (1882) On the contact of elastic solids. J. Reine und angewandte Mathematik92:156–171.
9.
JiangHWGaoLZhaoWQ (2021) Model updating of the vehicle-track coupled system based on in-situ dynamic measurements. Construction and Building Materials298: 123861.
10.
LiuXWangP (2010) Vehicle-track-roadbed system dynamics. Southwest Jiaotong University Press, Chengdu.
11.
LiuXWWuCXieJ, et al. (2009) Theoretical analysis of long floating slab track (part II) -receptance. Chinese Journal of Computational Mechanics26(06): 924–927.
12.
MaLXLiuWNLiuWF (2013) Study on vibration of periodic supported track structure under moving loads. China Railway Science34: 1–7.
13.
MaMXuLDuL, et al. (2021) Prediction of building vibration induced by metro trains running in a curved tunnel. Journal of Vibration and Control, 27(5–6):515–528.
14.
Martínez-CasasJGiner-NavarroJBaezaL, et al. (2017) Improved railway wheelset–track interaction model in the high-frequency domain. Journal of Computational and Applied Mathematics309: 642–653.
15.
MaziluTDumitriuMTudoracheC (2011) On the dynamics of interaction between a moving mass and an infinite one-dimensional elastic structure at the stability limit. Journal of Sound and Vibration330(15): 3729–3743.
16.
OnoKYamadaM (1989) Analysis of railway track vibration. Journal of Sound and Vibration130(2): 269–297.
17.
PengHLiuMCaiXP, et al. (2022) Analysis on vibration reduction characteristics of ballast bed structure in subway tunnel. Journal of Beijing Jiaotong University46(3):88–94.
18.
TangXYCaiXPPengH, et al. (2022) Experimental and simulation investigation into the cause and treatment of rail corrugation for metro. Journal of Central South University29(12): 3925–3938.
19.
WangRFCaiXPTangXY, et al. (2022) Study on the stiffness of transition between rubber floating slab track and common ballastless track in subway. Journal of Railway Science and Engineering19(10):2884–2892.
20.
WeiKZhaoCYWangP, et al. (2016) Influence of temperature-dependent stiffness of rail pads on the frequency-domain random vibration of vehicle-track coupled system. Journal of the China Railway Society38(1): 111–116.
21.
WeiKChengFZhaoZM, et al. (2022) Research on the evaluation method of vibration reduction effect of damping pad floating slab track. Journal of Railway Science and Engineering19(03):656–664.
22.
WuTX (2007) On effectiveness of vibration isolation for super-elastic rail support combined with booted sleeper or floating slab track. Journal of Vibration Engineering, 20(5): 489–493.
23.
XuLYuZ (2021) Dynamic solution for vehicle–track interaction considering the elastoplasticity of track slabs. Journal of Vibration and Control27(13–14):1668–1680.
24.
YeMZengZZengH, et al. (2023) A study on the dynamic characteristics of the new type of prefabricated slab ballastless track structure for urban rail transit applications. Journal of Vibration and Control29(15–16): 3756–3768.
25.
ZhaiWM (2022) Development of vehicle-track coupled dynamics theory and engineering practice. Chinese Science Bulletin67(32):3794–3807.
26.
ZhangCM (2021) Dynamic Response and Environmental Vibration Influence of Floating Slab Track Based on Rubber Nonlinear Characteristics. Beijing Jiaotong University.
27.
ZhangSChengGShengXZ, et al. (2020) Dynamic wheel-rail interaction at high speed based on time-domain moving Green’s functions. Journal of Sound and Vibration488: 115632.
