Two-material rail development: field test results regarding rolling contact fatigue and squeal noise behaviour

Hiensch, Martin; Larsson, Per‐Olof; Nilsson, Olof; Levy, Didier; Kapoor, Ajay; Franklin, FJ; Nielsen, Jens C. O.; Ringsberg, Jonas W.; Josefson, B. L.

doi:10.1016/j.wear.2004.03.067

Cited by 29 publications

(13 citation statements)

References 3 publications

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“…Hiensch et al [108] described a two-material rail intended to be resistant to rolling contact fatigue and to reduce squeal noise. Surface coatings were applied either during rolling of the rails or by laser cladding.…”

Section: Rail Profiles Surface Treatments and Changes To Gaugementioning

confidence: 99%

A State-of-the-Art Review of Curve Squeal Noise: Phenomena, Mechanisms, Modelling and Mitigation

Thompson

Squicciarini

Ding

et al. 2018

Notes on Numerical Fluid Mechanics and Multidisciplinary Design

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Curve squeal is an intense tonal noise occurring when a rail vehicle negotiates a sharp curve. The phenomenon can be considered to be chaotic, with a widely differing likelihood of occurrence on different days or even times of day. The term curve squeal may include several different phenomena with a wide range of dominant frequencies and potentially different excitation mechanisms. This review addresses the different squeal phenomena and the approaches used to model squeal noise; both time-domain and frequency-domain approaches are discussed and compared. Supporting measurements using test rigs and field tests are also summarised. A particular aspect that is addressed is the excitation mechanism. Two mechanisms have mainly been considered in previous publications. In many early papers the squeal was supposed to be generated by the so-called falling friction characteristic in which the friction coefficient reduces with increasing sliding velocity. More recently the mode coupling mechanism has been raised as an alternative. These two mechanisms are explained and compared and the evidence for each is discussed. Finally, a short review is given of mitigation measures and some suggestions are offered for why these are not always successful.

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Section: Rail Profiles Surface Treatments and Changes To Gaugementioning

confidence: 99%

A State-of-the-Art Review of Curve Squeal Noise: Phenomena, Mechanisms, Modelling and Mitigation

Thompson

Squicciarini

Ding

et al. 2018

Notes on Numerical Fluid Mechanics and Multidisciplinary Design

View full text Add to dashboard Cite

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“…The aim was to increase the operational life and reduce the emitted noise of particularly exposed sections of railway track, such as small-radius curves subject to large traffic volumes and high axle loads. 48 The application of an extra surface layer to the railhead was investigated, see Fig. 1.5.…”

Section: Two-layer Materialsmentioning

confidence: 99%

Introduction to wheel–rail interface research

Lundén

Paulsson²

2009

Wheel–Rail Interface Handbook

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“…Generally, squeal noise of 100-110 dB is generated when a train passes through a curve about 7.5 m from the center of the rail; this is 15-20 dB higher than the rolling noise of the vehicle, and one or more pure tone noises occur at frequencies of 400-10,000 Hz [5]. Curve noise is generated mainly in sections of a track with a curve radius of less than 300 m. If the ratio of the axle distance to the curve radius is 100 or less, the probability of generating a squealing noise is high [6,7]. Flange noise manifest differently based on the contact position of the wheel and the rail when the curve is passed over [8].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Wheel Squeal and Flanging on Curved Railway Tracks

Kim

Yun

Noh

2019

Int. J. Precis. Eng. Manuf.

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When a railway vehicle moves over a sharply curved section of track, intense high-frequency noises sometimes occur. These are potentially a source of annoyance to those living adjacent to railway tracks. To efficiently identify measures appropriate to reduce curve squeal, it is important to determine the dominant noise type. However, it is difficult to analyze the various noises made over curved sections of railway using general noise measurements. In this study, we analyzed squealing and flange noises using various experimental approaches. We first investigated the noise characteristics of the railway vehicle via structural analysis of the wheel. It was confirmed that a wheel has various natural frequencies and eigenmodes in the high frequency range, i.e. over 1000 Hz. A roller rig test was performed to measure and investigate the characteristics of the noise generated when an actual wheel and the curved section of the railway track come in contact with each other. In this experiment the squeal and the flange noises, in particular, were reproduced by adjustments made to the lateral angle and vertical force, respectively. Results confirmed that the squealing noise occurs in the high frequency region and the flange noise occurs in various modes. A study was also conducted to measure and analyze the noise in the actual curved section of an urban railway. By comparing the frequency analysis and the natural frequency analysis of the noise that was actually measured, the mode by which the wheel caused the squealing noise was confirmed. Furthermore, the influence of the noise generated inside and outside the curved section of the track was investigated based on velocity, and the influence of the former on the noise generated was also examined. This study provides information on the squeal and flange noises generated when a railway vehicle moves over a curved section of a railway using various experimental approaches.

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Two-material rail development: field test results regarding rolling contact fatigue and squeal noise behaviour

Cited by 29 publications

References 3 publications

A State-of-the-Art Review of Curve Squeal Noise: Phenomena, Mechanisms, Modelling and Mitigation

A State-of-the-Art Review of Curve Squeal Noise: Phenomena, Mechanisms, Modelling and Mitigation

Introduction to wheel–rail interface research

Analysis of Wheel Squeal and Flanging on Curved Railway Tracks

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