Modelling of railway curve squeal including effects of wheel rotation
Paper i proceeding, 2015

Railway vehicles negotiating tight curves may emit an intense high-pitch noise. The underlying mechanisms of this squeal noise are still a subject of research. Simulation models are complex since they have to consider the non-linear, transient and high-frequency interaction between wheel and rail. Often simplified models are used for wheel and rail to reduce computational effort, which involves the risk of oversimplifications. This paper focuses on the importance to include a rotating wheel instead of a stationary wheel in the simulation models. Two formulations for a rotating wheel are implemented in a previously published wheel/rail interaction model: a realistic model based on an Eulerian modal coordinate approach and a simplified model based on a rotating load and moving Green's functions. The simulation results for different friction coefficients and values of lateral creepage are compared with results obtained for the stationary wheel. Both approaches for the rotating wheel give almost identical results for the rolling speed considered. Furthermore, it can be concluded that a model of a stationary flexible wheel is sufficient to simulate curve squeal.

curve squeal

wheel rotation

wheel/rail interaction

time domain

friction

Författare

Astrid Pieringer

Chalmers, Bygg- och miljöteknik, Teknisk akustik, Vibroakustik

Luis Baeza

Universitat Politecnica de Valencia (UPV)

Wolfgang Kropp

Chalmers, Bygg- och miljöteknik, Teknisk akustik, Vibroakustik

Notes on Numerical Fluid Mechanics and Multidisciplinary Design

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

Vol. 126 417-424

Ämneskategorier

Maskinteknik

Strömningsmekanik och akustik

Drivkrafter

Hållbar utveckling

Styrkeområden

Transport

Building Futures

DOI

10.1007/978-3-662-44832-8_50

ISBN

978-3-662-44832-8

Mer information

Senast uppdaterat

2018-11-21