R. Stefanelli, J. Dual, E. Cataldi-Spinola

Acoustic modelling of railway wheels and acoustic measurements to determine involved eigenmodes in the curve squealing phenomenon

Proceedings of the XIX IAVSD-Symposium, 29. August – 2. September 2005, Mailand, Italien

Abstract

Curve squealing is an annoying noise phenomenon occurring when a train runs through a curve with a small radius. To study this phenomenon, field and laboratory measurements have been performed. The main focus was to establish when, how often and under which conditions the phenomenon occurs and if all wheels are subjected to squeal or if just single wheels are involved. For this purpose, a curve with a radius of about 200 meters has been monitored. This curve is mainly utilized by only three types of suburban trains. This makes the data set more homogeneous for data comparisons.
In addition the acoustic behaviour of a wheel has been studied with computer models. The focus of these studies was the quantification of sound emission due to a unity force acting on the wheel rim.

27.01.06 | compiled by Stephan Kaufmann | ZfM | ETH