An investigation into the influence of longitudinal creepage on railway squeal noise due to lateral creepage

Monk-Steel, A.; Thompson, D.J.; Beer, F.G. de; Janssens, M.H.A.

doi:10.1016/j.jsv.2005.12.004

Cited by 53 publications

(47 citation statements)

References 4 publications

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“…<80 dB(A); (b) wheel and rail roller vibration increased, rail response is larger than wheel, the rail mode at 1490 Hz is predominant in the sound radiation, ringing: 80 ∼ 90 dB(A); (c) wheel roller is unstable and response is much larger than that of the rail roller, the wheel mode It is noted that for the The Netherlands Organisation for Applied Scientific Research (TNO) rig [1] which was also one-third scale, the start of squeal noise under pure lateral creepage occurred at 0.3…”

Section: Comparison With Theorymentioning

confidence: 99%

Experimental and theoretical investigation of railway wheel squeal

Hsu

Huang

Iwnicki

et al. 2007

Proceedings of the Institution of Mechanical Engineers, Part F:

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Abstract:The tangential contact forces that arise at the interface between the wheel of a railway vehicle and the rail provide all the traction, braking, and guidance required by the vehicle. These forces are the result of microslip or creepage and can become unstable exciting vibration of the wheel, particularly at frequencies corresponding to the wheel's axial (and radial) modes.Although theories exist for predicting these creep forces and their relationship to creepages, most lack experimental verification in the characterization of the falling friction coefficient during unsteady squealing. This paper presents some new results from a project which aims to develop a complete, validated model of curve squeal noise generation accounting for friction characteristics, excitation due to unstable forces between the wheel and rail and vehicle dynamic behaviour. The model includes wheel and track dynamic response and acoustic radiation. As part of the project, a twin disc rig has been modified to provide experimental data for the validation of the model and measurements were made of the lateral force and dynamic response of the rollers due to varying amounts of lateral creepage during squealing. The main feature of the twin disc rig compared with previous research [1] is that the contact force measuring system measures the contact forces at the web of the rollers and therefore close to the contact patch and through a slipring arrangement enables the lateral vibration of both rollers in relation to squeal be measured with relative ease.In this paper, detailed descriptions of the twin disc rig and the test method developed are given. An outline of the squeal model is also presented. Results from the tests have been compared with the prediction from the squeal model and with available theories and showed good agreement.

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Section: Comparison With Theorymentioning

confidence: 99%

Experimental and theoretical investigation of railway wheel squeal

Hsu

Huang

Iwnicki

et al. 2007

Proceedings of the Institution of Mechanical Engineers, Part F:

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“…Then, short calculation time algorithm should be used taking the computational cost of the model implemented in the multibody computer program used in the analysis. The method used in the work here for calculating the tangential contact forces and moments is Kalker linear theory of rolling contact [10], this theory based on the assumptions that the existence of small creepages and spin creep, and the area of slip is so small that its influence can be neglected. Under these assumptions, the adhesion zone is assumed to cover the entire area of contact.…”

Section: Review Paper On Fabrication To Improve Process Planning In Rmentioning

confidence: 99%

“…As strategic planning has grown in popularity, researchers have devoted more time and attention to defining strategic planning. [10] Bryson (2004) defines strategic planning as "a disciplined effort to produce fundamental decisions and actions that shape and guide what an organization is, what it does, and why it does it". He says the key to understanding planning is the concept of formalization.…”

Section: Review Paper On Fabrication To Improve Process Planning In Rmentioning

confidence: 99%

Review Paper on Fabrication to Improve Process Planning In Rail Bogie

Rajak¹

2017

IOSR JMCE

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“…The submodel of contact mechanics is based on the models developed previously, 1,5,6,8 which integrates the effect of angle of attack, rolling speed, material and geometric characteristics. The creepage-dependent friction coefficient of the rolling contact ȝ(ȗ) can be expressed as …”

Section: Theoretical Modellingmentioning

confidence: 99%

The modeling of wheel squeal in the time domain and its validation

Liu

Meehan

2013

The Journal of the Acoustical Society of America

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The sound pressure level of wheel squeal has been shown to increase with the angle of attack and rolling speed in both field and laboratory tests, but the causes behind the manner of increase are still unknown. To investigate this, a model in the time domain was extended by utilising nonlinear rolling contact theory developed specially for wheel squeal. This model is used to simulate the vibration velocity of a testrig wheel at different rolling speed and angle of attack. The results correlate well with the recorded sound pressure level of wheel squeal in laboratory tests. It was found that due to the interaction of wheel vibration with lateral force and lateral creepage the vibration velocity amplitude of the wheel increases with angle of attack and rolling speed increases. This explains why the sound pressure level of wheel squeal also increases in the same manner. The phenomenon is explained theoretically using the mechanics based model.

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An investigation into the influence of longitudinal creepage on railway squeal noise due to lateral creepage

Cited by 53 publications

References 4 publications

Experimental and theoretical investigation of railway wheel squeal

Experimental and theoretical investigation of railway wheel squeal

Review Paper on Fabrication to Improve Process Planning In Rail Bogie

The modeling of wheel squeal in the time domain and its validation

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