A parametric study of the lubrication transport mechanism at the rail-wheel interface

Thelen, Gerhard; Lovette, Michael A.

doi:10.1016/0043-1648(95)06701-9

Cited by 9 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lubrication can be effective only if the transport mechanism is handled in an effective manner. 26 In the field study the location and installation height of the applicator bars was critical to the success of the wheel to pick-up grease off the bars and carry it along the track.…”

Section: Location and Position Of Applicator Barsmentioning

confidence: 99%

Development of effective performance measures for wayside rail curve lubrication in heavy haul lines

Uddin

Chattopadhyay

Rasul

2013

Proceedings of the Institution of Mechanical Engineers, Part F:

View full text Add to dashboard Cite

Rail curve lubrication using wayside gauge face lubrication systems is widely used by the railway industry. It provides costeffective solutions to reduce rail/wheel wear, energy consumption, costs and noise. Research efforts on cost-effective friction management solutions for the Australian heavy haul industry have been limited. Therefore, the performance measures necessary for the evaluation of effective gauge face lubrication practice have not been developed. Currently, there are no specific performance measures available for heavy haul rail curve lubrication. Also, the performance of in-rail lubrication seems to be poor in most cases. Appropriate performance measures should be implemented that can accurately demonstrate the actual performance of the lubrication. This paper is focused on the development of effective performance measures based on lubrication theory, maintenance regime, field testings of different wayside lubrication equipment technology and different greases currently used on heavy haul lines. Extensive field tests have been conducted on the Queensland Rail Network's North Coast Line, which is a dedicated coal line. Data were collected and analysed for the development of performance measures and cost-effective lubrication decisions. The presented performance measures and illustrative examples could be used by other types of railway networks for enhancement of rail/wheel asset life, asset availability, reliability and safety along with reduction of costs.

show abstract

Section: Location and Position Of Applicator Barsmentioning

confidence: 99%

Development of effective performance measures for wayside rail curve lubrication in heavy haul lines

Uddin

Chattopadhyay

Rasul

2013

Proceedings of the Institution of Mechanical Engineers, Part F:

View full text Add to dashboard Cite

show abstract

“…Rail lubrication, for example, is affected by many stochastic parameters that inhibit its effectiveness, such as the frequency of trains, frequency of lubrication, and the amount, type, and method of lubrication. Thelen and Lovette imply that the effectiveness of lubrication is directly influenced by many factors, including wheel and rail contour, rail geometry, dynamic characteristics of the track, surface conditions of the wheel and rail, viscosity and lubricity of the grease, operating temperature of the wheel and rail, and environmental factors such as temperature and precipitation, and indirectly influenced by the operating characteristics of the lubricators, train action, wheel slip, environmental contamination, and human factors (6). These variable influences result in an inability to have controlled and regular rail wear, which indicates that lubrication has a variable effect on rail wear (7).…”

Section: Stochastic Nature Of Rail Wearmentioning

confidence: 99%

“…Furthermore, Thelen and Lovette identified that lubrication of curved rail tracks, in particular, faces a number of difficulties in regard to its effectiveness (6). Laboratory tests have observed a considerable variation in the effectiveness of lubrication with distance from the applicator (8).…”

Section: Stochastic Nature Of Rail Wearmentioning

confidence: 99%

Stochastic Rail Wear Model for Railroad Tracks

Costello

Premathilaka

Dunn

2012

Transportation Research Record: Journal of the Transportation R

View full text Add to dashboard Cite

This paper describes the development of a stochastic rail wear model. Once validated, the model can be used to assist in the strategic assessment of railroad track funding needs. The algorithms used for simulating rail wear use Markov processes, and the resulting transition probability matrix defines rail wear progression, as opposed to the more familiar regression-type model popular with engineers. The New Zealand railroad track database contained 10 years of rail wear data from which to develop and validate the model. The transition probability matrices for use in the model were developed with the first 5 years of the historical rail wear data, with the remaining 5 years set aside to validate the model. The development of the transition probability matrices is reported in the paper, together with the development of the initial condition distributions ready for use in validation of the model.

show abstract

“…The MS was received on 22 October 1999 and was accepted after revision for publication on 31 January 2000. [2,3]. Previous investigations have shown that both water and liquid-based¯ange lubrication products may contribute to rail rolling contact fatigue (RCF) failures by mechanisms such as crack face friction modi®cation and¯uid entrapment [4±6].…”

Section: Introductionmentioning

confidence: 99%

The effect of intermittent lubrication on the fatigue life of pearlitic rail steel in rolling-sliding contact

Fletcher

Beynon

2000

Proceedings of the Institution of Mechanical Engineers, Part F:

View full text Add to dashboard Cite

Railway¯ange lubrication can be unreliable, resulting in intermittent rather than continuous lubrication. Twin-disc contact simulation tests were carried out to investigate the in¯uence of intermittent lubrication on rail steel fatigue life, using both a colloidal suspension of molybdenum disulphide in an oil carrier¯uid (similar to a commercial¯ange lubrication product) and water. A brief interruption of the lubricant supply during molybdenum disulphide lubrication produced rapid surface failure of the rail steel, which was followed by rapid contact fatigue crack growth upon reapplication of the lubricant. During water lubrication the interruption of the lubricant (water) supply did not produce such rapid crack growth. The results were found to be in qualitative agreement with the predictions of the three-mechanism model of rolling contact fatigue, which combines the mechanisms of ratchetting (accumulation of unidirectional plastic strain until the critical failure strain of the material is reached) and the fracture mechanics-based mechanisms of shear stress driven and tensile¯uid assisted crack growth. Analysis of the test results using this model revealed crack face friction to be an important factor controlling crack growth, which may be responsible for the difference in behaviour between contacts lubricated with the molybdenum disulphide-based lubricant and those lubricated by water.

show abstract

A parametric study of the lubrication transport mechanism at the rail-wheel interface

Cited by 9 publications

References 0 publications

Development of effective performance measures for wayside rail curve lubrication in heavy haul lines

Development of effective performance measures for wayside rail curve lubrication in heavy haul lines

Stochastic Rail Wear Model for Railroad Tracks

The effect of intermittent lubrication on the fatigue life of pearlitic rail steel in rolling-sliding contact

Contact Info

Product

Resources

About