Results 221 to 230 of about 446,614 (267)
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Wear, 1986
Abstract The interactions between the tribological stress parameters and the measurable wear quantities during rolling with slip are examined with the help of experimental results already published and the results of some new investigations by the authors of this paper. It is from these that the following model for wear behaviour is derived. 1. (
Hans Krause, Gerhard Poll
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Abstract The interactions between the tribological stress parameters and the measurable wear quantities during rolling with slip are examined with the help of experimental results already published and the results of some new investigations by the authors of this paper. It is from these that the following model for wear behaviour is derived. 1. (
Hans Krause, Gerhard Poll
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The Influence of Rail Lubrication on Freight Car Wheel/Rail Wear Rates
Vehicle System Dynamics, 1985SUMMARY The effect of wheel and/or rail lubrication in reducing wheel/rail wear rates is evaluated by steady-state curving calculations of a freight car model with conventional and radial trucks. Numerical results indicate that for curves with radii less than 400m, rail lubrication is necesary and the wheel/rail wear rates may be reduced to 1/2.5 of ...
Z. Y. Shen, J. K. Hedrick
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The competitive role of wear and RCF in a rail steel
Engineering Fracture Mechanics, 2005Abstract A model for assessing wear and rolling contact fatigue (RCF) in rails is proposed, with particular emphasis for their competitive role. RCF was studied taking into account different mechanisms of crack nucleation and propagation in different working conditions, and failure indexes are proposed to predict which damage mechanism prevails ...
DONZELLA, Giorgio +4 more
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ANALYTICAL METHODS FOR WHEEL AND RAIL WEAR PREDICTION
Vehicle System Dynamics, 1985SUMMARY The wear algorithm described In this paper has the capability to predict the shapes into which rail vehicle wheels and rails wear in tangent track use. Results of the algorithm applied to a freight car model show that the wheel profiles wear into shapes that are nearly identical for four different wear model formulations examined.
Robert H. FRIES, Carlos G. DÁVILA
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2009
Detailed metallurgical investigations of worn rails and test discs show that rolling contact fatigue (RCF) crack initiation and early propagation are strongly influenced by microstructure. Also, normally benign, ductile inclusions near and at the rail surface can weaken the microstructure when transversely strain-flattened. The effect of different rail
Fletcher, D. I. +2 more
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Detailed metallurgical investigations of worn rails and test discs show that rolling contact fatigue (RCF) crack initiation and early propagation are strongly influenced by microstructure. Also, normally benign, ductile inclusions near and at the rail surface can weaken the microstructure when transversely strain-flattened. The effect of different rail
Fletcher, D. I. +2 more
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Effects of Rail Hardness on Rail Wear and Head Check Initiation
Transportation Research Record: Journal of the Transportation Research Board, 2016In China, rail head check on heavy-haul railways is the main type of rolling contact fatigue defect, especially since the advent of rail with good wear resistance and high hardness. The influence of hardness on rail wear and head check was explored by use of a method to predict rail head check initiation by considering wear.
Yu Zhou, Miao Yu, Junnan Jiang
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Investigation of a transitional wear model for wear and wear-type rail corrugation prediction
Wear, 2011In this paper, a recently proposed mechanics-based model for the wear coefficient of rail steels is experimentally validated and implemented to obtain useful predictive wear models for some popular railway steels. The model is then implemented to investigate the feasibility of top of rail (TOR) friction modifiers (FMs) for wear-type rail corrugation ...
Vuong, T. T. +6 more
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Numerical and Experiment Analysis of Rail Wear
Advanced Materials Research, 2011The rolling contact wear is a severe problem and meets with much widespread interest in the world. This paper describes an numerical method and simulation experiment investigation on the rail wear affected by the curve radius and axle load etc. The creep force ,stick/slip areas of contact particles, and friction work of wheel/rail in static condition ...
Cai Yun Wang +3 more
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Modelling wear and crack initiation in rails
Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 2007Wear and crack initiation of steel rails is a problem of great significance to the railway industry. A high wear rate shortens the life of rails and the frequent rail replacement is expensive in terms not only of resources but also of track access time and delays affecting timetables.
Franklin, F. J., Kapoor, A.
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Simulation of mutual wheel/rail wear
Wear, 2002Wheel/rail wear simulation based on mathematical models is one of the instruments of study and prognosis of wheel/rail life. Theoretical study of two mutually wearing bodies has shown that their steady-state worn profile depend on their initial profiles.
Sergey Zakharov, Ilya Zharov
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