Objetivo Objectives and content The intense, high-pitched squeal noise generated by tram and metro vehicles transversing narrow curves irritates passengers as well as inhabitants. This high frequency squeal noise is due to non linear stick slip (creepage) forces between railway wheel and rail. The lateral sticking and slipping causes vibrations in the wheel to increase until a stable amplitude is reached. Damped and resilient wheels are sometimes used to reduce squeal noise. To reduce wheel rail squeal noise with measures at the level of the track, rail lubrication (or flange lubrication) are used. These solutions are very unfriendly for the environment. A more promising method consists in introducing lateral damping in the wheel-rail system, or in changing the coefficient of friction between rail and wheel by a special treatment (hardsurfacing). The intended research project aims at developing rail fastening principles and rail damping devices with enough lateral damping and at developing rail hardsurfacing techniques with a specific coefficient of friction to prevent squeal generation. To achieve this, a good knowledge of the squeal generation mechanisms is required. A model for wheel-rail squealing noise will be established and validated. Parameter studies will show the sensitivity of the sound power against changes in the parameter values. In this way, minimum lateral damping values for the rail fasteners will be determined in functioned of all other variables (curves radius, speed, wheel geometry, ...). Specific rail fasteners and specific rail damping devices for curves will be developed and installed on an in situ test track. A rail section in curve will be hardsurfaced. Noise and vibration measurements will be carried out on both sections to compare with modelling results. The general aim is to be able to predict the generation of squeal noise and to have efficient rail damping principles and rail damping treatment procedures to solve this problem. Ámbito científico engineering and technologymechanical engineeringtribologylubricationnatural sciencesmathematicspure mathematicsgeometry Programa(s) FP4-BRITE/EURAM 3 - Specific research and technological development programme in the field of industrial and materials technologies, 1994-1998 Tema(s) 0302 - Transports Convocatoria de propuestas Data not available Régimen de financiación CSC - Cost-sharing contracts Coordinador Alfa Products & Technologies NV Aportación de la UE Sin datos Dirección 12/6,Mechelsevest 3000 Leuven Bélgica Ver en el mapa Coste total Sin datos Participantes (4) Ordenar alfabéticamente Ordenar por aportación de la UE Ampliar todo Contraer todo ACAB ACOUSTIC CONTROL LABORATORIES AB Suecia Aportación de la UE Sin datos Dirección 1,Tumstocksvaegen 1 187 66 TAEBY Ver en el mapa Coste total Sin datos Delta Rail EESV - EEIG Bélgica Aportación de la UE Sin datos Dirección 5,Plantsoenstraat 2850 Boom Ver en el mapa Coste total Sin datos REGIE AUTONOME DES TRANSPORTS PARISIENS Francia Aportación de la UE Sin datos Dirección 40 BIS,Rue Roger Salengro 40 Bis 94724 FONTENAY SOUS BOIS Ver en el mapa Coste total Sin datos Société Nouvelle de Métallisation Industrielle Francia Aportación de la UE Sin datos Dirección 50,Rue Mourelet 84093 Avignon Ver en el mapa Coste total Sin datos
