Article (Scientific journals)
High-Frequency Resonances of Train-Track Coupled System Due to Multiple Wheels Interference
Ge, Yaojun; Lei, Simian; Li, Qi
2023 • In International Journal of Structural Stability and Dynamics, 23 (16-18)
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Keywords :
High-frequency resonance; infinite Timoshenko beam; multi-wheel moving excitation; point receptance; track irregularity; train-track couple system; Coupled systems; Infinite timoshenko beam; Multi-wheel moving excitation; Point receptances; Resonance patterns; Timoshenko beams; Track irregularity; Train tracks; Train-track couple system; Civil and Structural Engineering; Building and Construction; Aerospace Engineering; Ocean Engineering; Mechanical Engineering; Applied Mathematics
Abstract :
[en] A significant resonance pattern at high frequencies around 400Hz to 1000Hz has been well observed from measured rail accelerations. Such resonances are key issues for rail noise and corrugation. Although this pattern has been noted and discussed in various papers in terms of wave reflections among multiple wheels, the aim of this study is to develop novel dynamic model and reveal generation mechanism of this resonance phenomenon with the train-track coupled system. An infinite Timoshenko beam with continuous supports is adopted for modeling the track system, and the point and transfer receptances of the rail for a moving excitation are explicitly deduced by the residue theorem together with a Fourier transform-based method. A frequency-domain method is then established to calculate the power spectral densities (PSD) of the train-track coupled system responses to stochastic irregularities with the moving vehicle model with multiple wheels. It is found that the high-frequency resonances occur when the reflected waves generated from multiple wheels on the rail are exactly in phase with the initial track irregularity. The load speed has negligible influence on the wheel-rail interaction in the lower frequency range and a small influence in the upper frequency range only for very high train speeds.
Disciplines :
Civil engineering
Author, co-author :
Ge, Yaojun ;  State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai, China
Lei, Simian  ;  Université de Liège - ULiège > Urban and Environmental Engineering  ; State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai, China
Li, Qi;  Department of Bridge Engineering, Tongji University, Shanghai, China
Language :
English
Title :
High-Frequency Resonances of Train-Track Coupled System Due to Multiple Wheels Interference
Publication date :
November 2023
Journal title :
International Journal of Structural Stability and Dynamics
ISSN :
0219-4554
Publisher :
World Scientific
Volume :
23
Issue :
16-18
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
NSCF - National Natural Science Foundation of China
CSC - China Scholarship Council
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