NDLI: Modelling the Effect of Steady State Wheel Temperature on Rail Wear

Content Provider	Springer Nature Link
Author	Asih, A. M. S. Ding, K. Kapoor, A.
Copyright Year	2012
Abstract	A moving train subjects a rail cross section to many wheel passes and heat generation at the interface from bulk friction and microslip. Frictional heating at the interface causes the temperature of the contacting rail surface and wheel surface to rise. After the train has passed, the rail temperature drops to ambient till the next train arrives. Wheels, on the other hand, pick up the frictional heat input continuously and hence their steady state temperature could be much higher than that of the rail. A hot wheel provides an additional temperature rise at the rail surface. The accompanying thermal stresses and thermal softening may enhance the rail wear rate. This has been investigated in the present study. A ratchetting failure-based computer simulation has been employed to assess the wear rate of a pearlitic rail steel. It is found that the thermal stress effect on wear rate is only the modest, but thermal softening can enhance the wear rate by up to an order of magnitude for the conditions considered.
Starting Page	239
Ending Page	249
Page Count	11
File Format	PDF
ISSN	10238883
Journal	Tribology Letters
Volume Number	49
Issue Number	1
e-ISSN	15732711
Language	English
Publisher	Springer US
Publisher Date	2012-10-30
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Rail wear Frictional heating Steady state wheel temperature Ratchetting Thermal softening Tribology, Corrosion and Coatings Surfaces and Interfaces, Thin Films Theoretical and Applied Mechanics Physical Chemistry Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Mechanics of Materials Mechanical Engineering Surfaces and Interfaces

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