Physical metallurgy aspects of rolling contact fatigue of rail steels

Shur, E. A.; Bychkova, N. Ya.; Trushevsky, S.M.

doi:10.1016/j.wear.2004.03.027

Cited by 23 publications

(8 citation statements)

References 2 publications

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“…For worn wheel/ rail interaction, generally, shear stresses decrease by logged distance as the contact surface becomes broadened; nevertheless, the behavior of declension is not linear which is on account of real profile evolutions approached by field measurements, unlike the conduct obtained based on laboratory measurements [13][14][15]. Indeed, it will not be even surprising that shear stresses increase in worn wheel/rail interaction in some logged distances.…”

Section: Resultsmentioning

confidence: 99%

Worn Wheel/Rail Contact Simulation and Cultivated Shear Stresses

Noori¹,

Shahravi²,

Rezvani³

2013

Journal of the Korean society for railway

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Section: Resultsmentioning

confidence: 99%

Worn Wheel/Rail Contact Simulation and Cultivated Shear Stresses

Noori¹,

Shahravi²,

Rezvani³

2013

Journal of the Korean society for railway

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“…Therefore, the study of the degradation behaviour of rail steel has become an attractive research field in recent years. Some experimental studies and field observations reported that the rolling contact fatigue strength/behaviour is dependent on rail grades, microstructure, composition and hardness of the rail steels. For instance, the improvement of the wear resistance by increasing the carbon content of the rail steels can influence the relative rates at which wear and rolling contact fatigue damage occur in rail head, and in some cases alter the morphology of the rolling contact fatigue damage.…”

Section: Introductionmentioning

confidence: 99%

A single parameter to evaluate stress state in rail head for rolling contact fatigue analysis

Pun

Kan

Mutton

et al. 2014

Fatigue Fract Eng Mat Struct

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Based on the Smith‐Watson‐Topper (SWT) method, a phenomenological approach for multiaxial fatigue analysis, the maximum SWT parameter is proposed as a single parameter to evaluate the stress state in the rail head for assessing the fatigue integrity of the structure. A numerical procedure to calculate the maximum SWT parameter from a finite element analysis is presented and applied in a case study, where the stress and strain fields due to wheel/rail rolling contact are obtained from a three‐dimensional finite element simulation with the steady‐state transport analysis technique. The capability of the SWT method to predict fatigue crack initiation in the rail head is confirmed in the case study. Analogous to von Mises stress for strength analysis, the maximum SWT parameter can be applied to evaluate the fatigue loading state not only in rail head due to rolling contact fatigue but also in a generic structure subjected to a cyclic loading.

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“…Experimental results show that bearings made of cleaner steels have substantial longer life against fatigue failure (Clarke et al, 1985;Zhou et al, 1989). Nonmetallic inclusions are also unfavorable to the fatigue strength of rail steels, high speed steels and tool steels (Beynon et al, 1996;Shur et al, 2005;Meurling et al, 2001). Quantitative analysis of stress disturbances created by the inclusions is essential to understand the failure mechanisms produced by material impurities.…”

Section: Introductionmentioning

confidence: 99%

Contact stress analysis of an elastic half-plane containing multiple inclusions

Kuo

2008

International Journal of Solids and Structures

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a b s t r a c tThis paper presents a two-dimensional contact stress analysis to investigate the effects of multiple inclusions on the contact pressure and subsurface stresses in an elastic half-plane. The boundary element method is used to analyze the contact problem where a set of integral equations is derived on the contact region and the matrix-inclusion interfaces. As the contact region is unknown a priori, an iterative procedure is implemented to determine the actual contact region and the contact pressure, and the tractions and displacements on the matrix-inclusion interfaces are obtained by solving the integral equations numerically. Numerical results show that the inclusions near contact surface could cause significant alterations in the contact pressure distribution. The stiff inclusions could toughen the surrounding material and reduce the internal stresses while the soft inclusions could increase the subsurface stresses.

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Physical metallurgy aspects of rolling contact fatigue of rail steels

Cited by 23 publications

References 2 publications

Worn Wheel/Rail Contact Simulation and Cultivated Shear Stresses

Worn Wheel/Rail Contact Simulation and Cultivated Shear Stresses

A single parameter to evaluate stress state in rail head for rolling contact fatigue analysis

Contact stress analysis of an elastic half-plane containing multiple inclusions

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