MATHEMATICAL DESCRIPTION OF WHEEL–RAIL WEAR PROCESS
https://doi.org/10.30932/1992-3252-2019-17-5-06-15
Abstract
The article covers one of the most pressing challenges for the railways, namely, the identification of the optimum hardness ratio within the wheel–rail couple. The duration of the service life of wheels and rails is largely determined by the hardness of the steel used for their manufacturing. It is confirmed by rather numerous studies carried out in different countries, as well as in Russia. Nevertheless, during many studies on the dependence of the wearresistance on hardness only specimens of wheel or rail steel were tested without a proper assessment of the influence of the one element hardness on the wearresistance of the other within the couple simulating the wheel and rail operation.
The objective of the paper was to identify the optimum relation between strength characteristics of railway wheel and rail, considering operating conditions. The wheel–rail couple is considered as a system. A mathematical model of wheel–rail friction wear process has been developed. Mathematical simulation used the non-compositional second-order rotatable design.
The article presents the results of the study on the intensity of wear of wheels and rails and recommendations regarding choice of axle load and rolling stock speed.
The objective of the paper was to identify the optimum relation between strength characteristics of railway wheel and rail, considering operating conditions. The wheel–rail couple is considered as a system. A mathematical model of wheel–rail friction wear process has been developed. Mathematical simulation used the non-compositional second-order rotatable design.
The article presents the results of the study on the intensity of wear of wheels and rails and recommendations regarding choice of axle load and rolling stock speed.
About the Author
T. G. Bunkova
Omsk State Transport University
Russian Federation
engineer at the Department of Mechanical Engineering and Rolling Stock Maintenance Technology, lecturer at the Department of Railway Wagons and Wagon Facilities
Russian Federation
engineer at the Department of Mechanical Engineering and Rolling Stock Maintenance Technology, lecturer at the Department of Railway Wagons and Wagon Facilities
References
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Review
For citations:
Bunkova T.G. MATHEMATICAL DESCRIPTION OF WHEEL–RAIL WEAR PROCESS. World of Transport and Transportation. 2019;17(5):6-15. https://doi.org/10.30932/1992-3252-2019-17-5-06-15
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