Time-domain modelling of curve squeal: a fast model for one- and two-point wheel/rail contact
Doctoral thesis, 2017
tangential point-contact model
Chalmers, Civil and Environmental Engineering, Applied Acoustics
Towards an engineering model for curve squeal
Notes on Numerical Fluid Mechanics and Multidisciplinary Design,; Vol. 126(2015)p. 433-440
Paper in proceedings
An engineering time-domain model for curve squeal: Tangential point-contact model and Green's functions approach
Journal of Sound and Vibration,; Vol. 376(2016)p. 149-165
Zenzerovic, I., Kropp, W., Pieringer, A. Influence of spin creepage and contact angle on curve squeal: a numerical approach
Zenzerovic, I., Kropp, W., Pieringer, A. Time-domain investigation of curve squeal in the presence of two wheel/rail contact points
Curve squeal is a kind of railway noise that develops in tight curves. By nature, curve squeal is tonal and usually very loud which, in combination, make it very disturbing. Since the incidence of tight curves is highest in cities and urban areas, squeal affects many people. But besides than being just a disturbance, squeal also negatively affects public health. Therefore, high importance is laid on its prevention.
Squeal has to be first well understood before it can be prevented. Engineers must be able to simulate squeal events to identify its characteristics, severity and what influences it. To enable engineers to better understand and evaluate squeal, tools for its simulation are needed. Such a tool is developed in this thesis. It can simulate a wide range of cases and is suitable for everyday engineering use. Different squeal events and even the application of squeal prevention measures can be analysed.
The proposed tool is a significant step towards a squeal simulation package suitable for the railway industry. It can also facilitate further advances in the understanding of squeal. In the long term, the improved knowledge on curve squeal will lead to better practical squeal prevention measures.
Fluid Mechanics and Acoustics
Areas of Advance
Doktorsavhandlingar vid Chalmers tekniska högskola. Ny serie: 4328
Chalmers University of Technology
SB-H4, Sven Hultins gata 6, Chalmers
Opponent: Prof. David J. Thompson, ISVR, University of Southampton, UK