Numerical assessment of the influence of worn wheel tread geometry on rail and wheel deterioration

Karttunen, Kalle; Kabo, Elena; Ekberg, Anders

doi:10.1016/j.wear.2014.05.006

Cited by 26 publications

(9 citation statements)

References 20 publications

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“…According to the shakedown diagram of Johnson [10] this will result in a reduction of RCF initiation. The relationship between hollow wear and RCF initiation was further investigated by a number of authors [5,6,11] and [12]. These authors highlighted the relationship between hollow wear and surface-initiated RCF cracks.…”

Section: Factors That Influence Rail Rcf Developmentmentioning

confidence: 99%

The effect of rolling contact fatigue mitigation measures on wheel wear and rail fatigue

Spangenberg

Fröhling

Schalk

2018

Wear

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The maintenance costs associated with heavy haul operations are mainly driven by wheel and rail damage in the form of wear and rolling contact fatigue (RCF). RCF initiated on the surface of the rail is the dominant damage mode on South Africa's iron ore export line. Two potential rail RCF mitigation measures were adapted from service tests and those published in literature and studied. The mitigation measures involved changes in suspension stiffness in an attempt to spread wheel wear across the tread and changes in rail profile design. These mitigation measures were evaluated by means of multi-body dynamics simulations including wheel wear predictions. Changes in suspension stiffness and rail profile design caused concentrated hollow wear on the wheels. These worn shapes of the wheels are conducive to RCF initiation with the worst performance coming from the application of a rail profile with gauge corner relief. Contact between the gauge side false flange of the wheel and the relief section of the rail profile were shown to increase the probability of RCF initiation.

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Section: Factors That Influence Rail Rcf Developmentmentioning

confidence: 99%

The effect of rolling contact fatigue mitigation measures on wheel wear and rail fatigue

Spangenberg

Fröhling

Schalk

2018

Wear

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“…Higher lateral forces and poor contact geometries arise as the vehicle is forced to negotiate the curve in spite of the reduced steering, see e.g. [43]. The end result is typically severe RCF on the wheel tread and increased RCF impact on the rail.…”

Section: Influence Of Wear On Lateral Dynamic Loads and Rcfmentioning

confidence: 99%

Rolling contact fatigue, wear and broken rail derailments

Magel

Mutton

Ekberg

et al. 2016

Wear

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Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/eng/view/object/?id=ca2dd2ef-04ac-48b2-9a33-980b4b7ede69 http://nparc.cisti-icist.nrc-cnrc.gc.ca/fra/voir/objet/?id=ca2dd2ef-04ac-48b2-9a33-980b4b7ede69 abstract Rolling contact fatigue (RCF) and wear are inevitable in the wheel/rail system, but resulting failures and derailments need not also be inevitable. Understanding why and under which conditions broken rails and derailments are likely to occur will focus research, inspection and maintenance efforts to minimize their probability. RCF leads to many broken rails, and rails with severe RCF damage are difficult to inspect. Yet wear reduces the extent of crack growth and hence can be beneficial in some cases. On the other hand, wear changes wheel and rail profiles, may expose virgin material to contact stresses, and reduces the section strength, which may lead to higher stress from bending and torsion. These influences are explored together with case studies of operational derailments. Based on this information and the current state of the art -both theoretical and practical -a number of issues are raised which need to be addressed through further developments in understanding and mitigating strategies to reduce the risk of failures from RCF and wear.Crown

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“…This relation can be obtained by performing a large set of numerical experiments that covers various scenarios and by using regression analysis to find meta-models representing the relation between input and output. Karttunen et al [8] used this procedure to investigate the risk on wear and Rolling Contact Fatigue (RCF) for worn wheels. Subsequently, they followed a similar approach for rails and obtained a correlation between damage indices and parameters used to describe wheel and rail profile geometry as well as curve radius, cant deficiency and gauge width [9].…”

Section: Introductionmentioning

confidence: 99%

Rail wear and remaining life prediction using meta-models

Meghoe

Loendersloot

Tinga

2019

International Journal of Rail Transportation

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The study presented in this paper proposes a method to estimate the Remaining Useful Life (RUL) of railway tracks determined by wear and taking into account various track geometry and usage profile parameters. The relation between these parameters and rail wear is established by means of meta-models derived from physical models. These models are obtained with regression analysis where the best fit is found from a relatively large set of numerical experiments for various scenarios. The specific parameter settings for these scenarios are obtained by using the Latin Hypercube Sampling (LHS) method. Furthermore, for the rail profile, which is one of the input parameters for the meta-model, it is shown that the evolution due to wear in moderate curves can be characterized by only one parameter. The findings in this work including are valuable for Infrastructure Managers (IMs) and can easily be implemented in maintenance decision support tools.

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Numerical assessment of the influence of worn wheel tread geometry on rail and wheel deterioration

Cited by 26 publications

References 20 publications

The effect of rolling contact fatigue mitigation measures on wheel wear and rail fatigue

The effect of rolling contact fatigue mitigation measures on wheel wear and rail fatigue

Rolling contact fatigue, wear and broken rail derailments

Rail wear and remaining life prediction using meta-models

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