Reducing Wheel-Rail Interaction Forces and Roughness Growth by Application of Rail Dampers

Croft, Briony; Jones, C.J.C.; Thompson, D.J.

doi:10.1007/978-3-540-74893-9_55

Cited by 5 publications

(2 citation statements)

References 10 publications

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“…A reprofiled and smooth rails surface is not only relevant to safety but also a decisive factor affecting the railway noise directly, as reported by several authors. [7][8][9][10] The surface of rail wheels cause, together with the track surface, total waviness, which is critical for the noise emission. Numerous research 5,6,[10][11][12][13][14][15][16] deal with the noise emissions in the rail network.…”

Section: Introductionmentioning

confidence: 99%

A new grinding strategy to improve the acoustic properties of railway tracks

Kuffa¹,

Ziegler

Peter³

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part F:

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Rail grinding is a special application of high-performance dry grinding, which combines a number of special characteristics, such as high feed speed, good surface roughness and waviness and a high material removal rate. Since beginning of the 20th century, rail grinding is used as a maintenance process and is essential for the increased rail life. In recent years, the surface roughness of railway tracks became increasingly important, especially with respect to the noise emissions. The rail grinding has a positive impact on the quality and life of the railway infrastructure, particularly on the driving comfort and safety. However, for the first weeks after the grinding, residents near railway lines have increased noise emissions from passing trains. This undesirable side-effect is a result of the rough surface left after the grinding process. Only through numerous train crossings are the generated roughness peaks gradually smoothed, whereby the noise emission is reduced. The wheel-rail contact is the dominant noise source at speeds between 50 and 250 km/h. Below those speeds, the propulsion noises outweigh and above 250 km/h the aerodynamic effects outweigh the wheel-rail contact noise emissions. In this paper, a newly developed rail grinding strategy is presented, which improves the roughness of the rail surface and, thus, delivers a reduction of noise emissions immediately after the grinding. The basic development of this new grinding technique was performed as a laboratory test, which will be presented in detail. Furthermore, for a better understanding of the process, the most important technological and kinematic variables are presented. The results of acoustic measurements on a track section, which has been ground with this new technology, will be presented.

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Section: Introductionmentioning

confidence: 99%

A new grinding strategy to improve the acoustic properties of railway tracks

Kuffa¹,

Ziegler

Peter³

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part F:

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“…It has been realized that different types of corrugation arise from different mechanisms, and some types of corrugation can indeed be prevented through proper devices. In recent years, several researchers find that the use of rail vibration absorbers is beneficial in suppressing short pitch rail corrugation [16,19]. As known, rail vibration absorbers are always used in controlling railway rolling noise.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical studies of the effects of a rail vibration absorber on suppressing short pitch rail corrugation

Qian¹,

F.²,

Chen³

et al. 2016

J. vibroeng.

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The effects of a rail vibration absorber on suppressing short pitch rail corrugation are studied. Firstly, a rail vibration field test is carried out to analyze the vibration response of the rail with and without the vibration absorbers. Secondly, based on the hypothesis that friction-induced self-excited vibration of a wheel-rail system causes rail corrugation; two finite element models of a wheel-rail system and a wheel-rail-absorber system are established and analyzed. Both sets of rail vibration test results and theoretical results show that the rail absorbers can effectively reduce the friction-induced self-excited vibration of the wheel-rail system in the frequency range of 200-800 Hz, which corresponds to frequencies of short pitch rail corrugation. This may be a main reason that the rail vibration absorber can suppress the formation of short pitch rail corrugation.

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