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Rail corrugation growth on curves - measurements, modelling and mitigation

Peter Torstensson (Institutionen för tillämpad mekanik, Dynamik) ; Jens C. O. Nielsen (Institutionen för tillämpad mekanik, Dynamik)
Notes on Numerical Fluid Mechanics and Multidisciplinary Design (1612-2909). Vol. 126 (2015), p. 659-666.
[Artikel, refereegranskad vetenskaplig]

The development of rail corrugation (so called rutting corrugation) on a 120 m radius curve on the metro of Stockholm Public Transport was studied by field measurements, laboratory measurements and numerical simulations. The corrugation develops exclusively on the (inner) low rail with wavelengths of about 5 cm and 8 cm. A time-domain model for prediction of long-term roughness growth on small radius curves is developed and validated against measured data. The wavelength-fixing mechanisms of the corrugation are bending eigenmodes of the leading wheelsets. The application of a friction modifier effectively mitigates the problem.

Nyckelord: rail corrugation, short radius curves, prediction, dynamic vehicle-track interaction



Denna post skapades 2015-05-22. Senast ändrad 2015-11-20.
CPL Pubid: 217411

 

Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Dynamik

Ämnesområden

Fastkroppsmekanik
Farkostteknik
Tribologi

Chalmers infrastruktur