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Experimental validation of the twins prediction program for rolling noise. Pt.1: description of the model and method

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Author: Thompson, D.J. · Hemsworth, B. · Vincent, N.
Type:article
Date:1996
Publisher: Academic Press
Place: London, UK
Institution: Technisch Physische Dienst TNO - TH
Source:Journal of Sound and Vibration, 1, 193, 123-135
Identifier: 233327
Keywords: Traffic · Computer aided design · Computer simulation · Computer software · Pressure effects · Railroad rolling stock · Railroad tracks · Roughness measurement · Vehicle wheels · Experimental validation · Full scale running tests · Rolling noise · Sound pressure · Track wheel interaction noise software · Acoustic noise

Abstract

The C163 Expert Committee of the European Rail Research Institute (ERRI) concerned with Railway Noise, has been developing theoretical models for the generation of wheel/rail rolling noise. These models have been brought together into a software package, called TWINS ("Track-Wheel Interaction Noise Software"). This is intended as a tool with which different designs of wheel and track can be assessed in terms of their noise generation. This paper begins by describing briefly the various theoretical models incorporated, the assumptions made within these models and their limitations. On the basis of the input and output parameters, a methodology is derived for the validation of the model by using full scale running tests. Two sets of experiments have been performed for a range of conditions in which the input parameters (the surface roughnesses of wheel and rail) were measured as fully as possible. As well as the sound pressure during train pass-by, a number of intermediate parameters were also monitored to allow validation of parts of the model.