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http://dx.doi.org/10.7736/KSPE.2015.32.7.603

Estimation Study on the Wheel/Rail Adhesion Coefficient of Railway Vehicles Using the Scaled Adhesion Tester  

Kim, Min Soo (Metropolitan Transportation Research Center, Korea Railroad Research Institute)
Hee Kim, Kyung (Metropolitan Transportation Research Center, Korea Railroad Research Institute)
Kwon, Seok Jin (High-Speed Railroad System Research Center, Korea Railroad Research Institute)
Publication Information
Journal of the Korean Society for Precision Engineering / v.32, no.7, 2015 , pp. 603-609 More about this Journal
Abstract
Railway vehicles driven by wheels obtain force required for propulsion and braking by adhesive force between wheels and rails, this adhesive force is determined by multiplying adhesion coefficient of the friction surface by the applied axle load. Because the adhesion coefficient has a peak at certain slip velocity, it is important to determine the maximum values of the friction coefficient on the contact area. But this adhesive phenomenon is not clearly examined or analyzed. Thus we have developed new test procedure using the scaled adhesion test-bench for analyzing of the adhesion coefficient between wheel and rail. This adhesion test equipment is an experimental device that contacts mutually with twin disc which are equivalent to wheels and rails of railway vehicles.
Keywords
Adhesion coefficient; Adhesion tester; Slip; Adhesive force; Railway vehicle;
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