Rail corrugation growth on curves - measurements, modelling and mitigation
Artikel i vetenskaplig tidskrift, 2015

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.

rail corrugation

short radius curves

prediction

dynamic vehicle-track interaction

Författare

Peter Torstensson

Chalmers, Tillämpad mekanik, Dynamik

Jens Nielsen

Chalmers, Tillämpad mekanik, Dynamik

Notes on Numerical Fluid Mechanics and Multidisciplinary Design

1612-2909 (ISSN) 1860-0824 (eISSN)

Vol. 126 659-666

Ämneskategorier

Tribologi

Teknisk mekanik

Farkostteknik

DOI

10.1007/978-3-662-44832-8_78