Theoretical Simulation and Experimental Investigation of a Rail Damper to Minimize Short‐Pitch Rail Corrugation

Zhao, Caiyou; Wang, Ping; Sheng, Xi; Meng, Duo

doi:10.1155/2017/2359404

Cited by 9 publications

(5 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In [38], wheel-rail resonance was the leading cause of corrugation. In [39], the flexibility difference of the rail and sleeper caused rail corrugation. Correa et al used the corrugation growth as an index to analyze its development [40], and he noted that some resonance between the wheelset and track resulted in corrugation.…”

Section: Literature Reviewmentioning

confidence: 99%

Applying System Dynamics of Discrete Supported Track to Analyze the Rail Corrugation Causation on Curved Urban Railway Tracks

Yin

Wei

Zheng

2021

Discrete Dynamics in Nature and Society

View full text Add to dashboard Cite

Urban rail corrugation on curved tracks with small radii causes strong howling during operation, which has been bothering subway operating companies for many years. Therefore, revealing its causes and growth is important for the comfort and safety of subway operation. Current studies believe that the occurrence of rail corrugation is largely due to the resonant vibration of the wheel-rail system. However, little attention has been paid to the key causes of the track resonance and the practical prediction of the occurrence probability of rail corrugation on the certain track. This paper intends to solve these above issues. Firstly, the practical model of predicting the rail corrugation growth is proposed based on the wheel-rail coupling interaction, the key causes of corrugation are investigated, and the sensitivity analysis is carried out, while the corrugation superposition model is introduced to the analyze the corrugation evolution as well as to validate the corrugation growth from the aspect of material friction and wear. Secondly, the impact of the key causes on the initiation and development of the rail corrugation is investigated based on the cosimulation. Finally, case studies validate the proposed theory model and method. The results show that the practical prediction model for the rail corrugation growth proposed in this paper is able to estimate the occurrence possibility of rail corrugation on a specific track, and the superharmonic resonance of the track directly excited by passing vehicles eventually leads to rail corrugation. It is also found that shortwave corrugation develops more rapidly, and adjusting the support stiffness or sleeper spacing leads to fluctuations in the corrugation wavelength and its wear rate.

show abstract

Section: Literature Reviewmentioning

confidence: 99%

Applying System Dynamics of Discrete Supported Track to Analyze the Rail Corrugation Causation on Curved Urban Railway Tracks

Yin

Wei

Zheng

2021

Discrete Dynamics in Nature and Society

View full text Add to dashboard Cite

show abstract

“…According to the investigations, these tracks supported by the Cologne egg fasteners, whether straight or curved, are suffering from the corrugation wear of rail, as are shown in Figure 1. The possible causes of the corrugation wear are as follows: the lateral pinned–pinned resonance (Zhao et al, 2017), the pronounced resonance of train/track dynamic interaction at certain frequencies (Zhang et al, 2014), and the friction-induced vibration (Cui et al, 2016). In terms of control measures, rail corrugation on the straight track can be eliminated by replacing the Cologne egg fasteners with the fastener system with higher support stiffness such as the DTVI2 fasteners.…”

Section: Introductionmentioning

confidence: 99%

Study on the effect of the fastener support structure on rail corrugation in metros based on the friction-induce vibration

Wu¹,

Liu²,

Pan³

et al. 2021

Journal of Vibration and Control

View full text Add to dashboard Cite

Rail corrugation is very serious in Cologne egg fastener track; effective control measures are still lacking. The cause of the corrugation wear on a curved metro track is analyzed based on the friction-induced vibration theory. A finite element model is established to study the frequency domain and time domain features of the friction-induced oscillation of this system. The influences of the fastener spacing and the fastener support length on the corrugation wear are investigated to develop countermeasures. The simulation results show that the friction-induced vibration of the wheel-track system is the wavelength-fixed mechanism of the corrugation wear of rail of the curved Cologne egg fastener track. There are two reasons why the low rail corrugation wear is more serious. The contact resultant force between the low rail and the wheel is obviously bigger than that between the wheel and the high rail, resulting in a higher wear rate of the low rail. The contact force fluctuation of the low rail caused by the friction-induced vibration is more severe, resulting in a higher corrugation wear evolution speed on the low rail. The friction-induced oscillation cannot be eliminated only by adjusting the fastener support length and spacing. However, the long-wavelength corrugation wear instead of the more harmful short-wavelength corrugation wear can be produced by adjusting the fastener support length and the fastener spacing to alleviate the influence of corrugation wear on the vehicle-track system.

show abstract

“…Urban railway transportation alleviates the enormous traffic pressure brought by urbanization. 1 However, excessive vibration and noise from subways not only seriously affect the comfort of passengers and the normal life of people along the line, 2,3 but also cause fatigue damage to vehicles, tracks and surrounding buildings, 4,5 which shorten their service life. For the sake of controlling the vibration of the subway, various vibration reduction measures were applied during construction.…”

Section: Introductionmentioning

confidence: 99%

Theoretical study of long elastic sleeper track to reduce vibrations induced by subway trains

Cai

Wang

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part F:

View full text Add to dashboard Cite

Long elastic sleeper track (LEST) is a medium vibration reduction track, which is gradually used in urban rail transit in recent years. In order to analyze the structure of LEST used in subways and to study the dynamic effect of the elastic cushion stiffness and vehicle speed, a dynamic model of the vehicle–track–tunnel–soil coupling system was established based on the finite element method and vehicle–track interaction dynamics theory. The results show the following: (1) LEST is more advantageous in vibration reduction performance compared with the common slab track and the low vibration track under the same track stiffness, and LEST also has better integrity and stability than the low vibration track; (2) The lower the cushion stiffness is, the smaller the accelerations of the tunnel wall are, but the dynamic displacements of the track rise in time domain. Considering the dynamic displacements and accelerations, the cushion stiffness is recommended to be 20–30 kN/mm. (3) High vehicle speed has a detrimental effect on the dynamic response, especially the accelerations of track. It is necessary to pay more attention to vibration when the vehicle speed exceeds 100 km/h in the subway if LEST is used.

show abstract

Theoretical Simulation and Experimental Investigation of a Rail Damper to Minimize Short‐Pitch Rail Corrugation

Cited by 9 publications

References 16 publications

Applying System Dynamics of Discrete Supported Track to Analyze the Rail Corrugation Causation on Curved Urban Railway Tracks

Applying System Dynamics of Discrete Supported Track to Analyze the Rail Corrugation Causation on Curved Urban Railway Tracks

Study on the effect of the fastener support structure on rail corrugation in metros based on the friction-induce vibration

Theoretical study of long elastic sleeper track to reduce vibrations induced by subway trains

Contact Info

Product

Resources

About