Back to Search Start Over

A new approach for the evaluation and the improvement of the metrological characteristics of an instrumented wheelset for the measure of wheel–rail contact forces.

Authors :
Cazzulani, Gabriele
Di Gialleonardo, Egidio
Bionda, Stefano
Bassetti, Marco
Crosio, Pietro
Braghin, Francesco
Source :
Proceedings of the Institution of Mechanical Engineers -- Part F -- Journal of Rail & Rapid Transit (Sage Publications, Ltd.); Apr2017, Vol. 231 Issue 4, p381-393, 13p
Publication Year :
2017

Abstract

The actual European regulations for the acceptance of railway vehicles prescribe the measurement of not only accelerations but also contact forces exchanged at wheel–rail interface, in order to assess the level of running safety, track loading and vibration behaviour. It is important to point out that the standards do not prescribe any specific method to measure forces, or define the measurement of forces. The aim of this paper is to investigate the metrological properties of a dynamometric wheelset in order to determine the associated measurement uncertainty and to verify its readiness in the range of frequencies where the force analysis must be performed. With reference to a specific instrumented wheelset, a method for increasing the accuracy of the measure when critical running conditions (i.e. large values of the derailment coefficient Y/Q) are detected is proposed. The proposed method can be applied to any instrumented wheelset, but it is particularly effective on non-conventional wheelsets, where only few measurements are available and the classical methods cause large estimation errors. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
09544097
Volume :
231
Issue :
4
Database :
Complementary Index
Journal :
Proceedings of the Institution of Mechanical Engineers -- Part F -- Journal of Rail & Rapid Transit (Sage Publications, Ltd.)
Publication Type :
Academic Journal
Accession number :
122437042
Full Text :
https://doi.org/10.1177/0954409716631785