Mots-clé
(Anglais)
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Railway; railway noise; brake; block brake; brake block; locomotive; freight car; wheel roughness
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Autre Numéro de projet
(Anglais)
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EU project number: BRPR-CT95-0070
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Programme de recherche
(Anglais)
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EU-programme: 4. Frame Research Programme - 2.1 Industrial and materials technologies
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Description succincte
(Anglais)
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See abstract
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Autres indications
(Anglais)
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Full name of research-institution/enterprise:
ABB Daimler-Benz Transportation (Schweiz) AG
Abteilung BWM
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Partenaires et organisations internationales
(Anglais)
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Nederlandse Spoorwegen N.V. (NL), Deutsche Bahn AG (D), Schweizerische Bundesbahnen (CH), ABB Daimler-Benz Transportation (Schweiz) AG (CH), Metravib RDS SA (F),
Frendo SpA (I), Ferrovie dello Stato SpA (I), Kungliga Tekniska Hogskolan Stockholm (S), Chalmers University of technology
(S), European Rail Research Institute (NL), Ferodo Ltd. (UK), Politecnico di Torino (I)
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Résumé des résultats (Abstract)
(Anglais)
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Noise reduction is one of the most important issues that freight traffic shall face by now in order to anticipate and to meet future legislation requirements in this matter. Barriers or insulation measures of houses near the tracks are not fully satisfactory as they are quite expensive and allow only a local treatment of the noise nuisances. Therefore measures at the sources are required. In EUROSABOT, focus is placed on rolling noise of freight trains and locomotives. While braking, the interaction between brake block and the wheel tread generates roughness patterns which become a major source of excitation for rolling noise. Reducing wheel roughness results in a decisive contribution to a global reduction of noise annoyance of railways.
The global objective of EUROSABOT is to find a suitable brake block (material and design) which keeps the advantages of cast iron (efficiency and low cost), which makes it so widely applicable to freight vehicles, but would have a much better behaviour in terms of roughness generation and would not have the drawbacks of other families of brake blocks.
In practice, to reach this global objective, it has been established that the mechanisms of wheel-block interaction should be better understood, models of roughness generation should be built and validated, prototypes of improved blocks should be designed, produced and tested and appropriate exploitation measures should be taken to facilitate a rapid implementation of those solutions.
In the first year, 'state of the art' was collected, initial field tests and rig tests performed. In the second year, the field and rig tests were analysed and interpreted and models developed. Synthesis of improved blocks began and were executed iteratively with selection tests on different test rigs and supported by modelling. In the third year this processes were completed and the final blocks undergone field tests and main parts of official homologation tests. Also the models were validated.
Adtranz's main contribution was the preparation and execution of the two main field test campaigns, the analysis of the gained data and synthesis of all the field test results of all concerned partners. Sulzer Innotec (a sub-contractor of Adtranz in EUROSABOT) performed rig tests for certain parameters and their analysis.
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Références bases de données
(Anglais)
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Swiss Database: Euro-DB of the
State Secretariat for Education and Research
Hallwylstrasse 4
CH-3003 Berne, Switzerland
Tel. +41 31 322 74 82
Swiss Project-Number: 95.0151-1
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