Forskning och Innovation
Till Trafikverket.se
FoI
Ansökan
Projekt
Resultat
Investigation of the Top-of-Rail Friction by Field Measurements on Swedish Iron Ore Line
Projekt:
JVTC
Sammanfattning:
Friction management in the railway industry is a well-established technology with the aim of optimizing the friction between the wheel and rail. Determining the friction coefficient (μ) at the wheel-rail interface is therefore important especially for heavy haul lines with higher axle loads. This paper presents an initial study of the top-of-rail friction condition of a line with 30 ton axle load, the Iron Ore Line in the northern part of Sweden. The friction coefficient between the rail and the metal wheel of a portable tribometer was measured at different geographical locations and in different environmental conditions. The effects of precipitation are studied and compared with the effects of top-of-rail friction modifiers.
The measurements of non-lubricated line sections showed values of μ≈0.6, compared to μ≈0.3 for areas with, for example, top-of- rail lubrication. In snowy conditions a decrease in friction could also be detected.
Författare:
Yonas Lemma ; Matthias Asplund ; Matti Rantatalo
Utgivare:
International Journal of C O M A D E M
Utgivningsdatum:
2015-04
Diarienummer:
TRV 2011/58769
ISSN:
1363-7681
Antal sidor:
4
Språk:
Engelska
Kontaktperson:
Per Olof Larsson Kråik, UHjbs
Trafikverket, Postadress: 781 89 Borlänge, Telefon: 0771-921 921