2000 · 10 citations · 0 references
EngineeringAutomotive EngineeringCivil EngineeringAcousticsComputational AcousticsPavement EngineeringAcoustic MaterialsAcoustic ModelingAcoustic PerformancePavement DesignPavement MaterialsPavement Surface CharacteristicsAcoustic Reflection ModelingAsphalt BinderContact NoiseHorn AcousticsSurface ReflectionsTire-pavement NoiseTire-road NoiseTire-road Vibration
This paper deals with the modelling of amplification effect of tyre/road contact noise (horn effect), due to the multiple reflections between the curved and hard surface of the tyre and the road pavement. First an analytical model, based on the modal decomposition of the sound pressure, was used for the 2D case of an infinite rigid cylinder and the 3D case of a rigid sphere, both on a flat reflecting plane. This model provided the reference results. Next, a 2D BEM model was used in which sound absorption properties of the road surface were introduced. Comparisons with 2D analytical method for purely reflecting case were very favourable, and the effect of a porous asphalt on amplification was evaluated. Finally a 3D BEM model was developed and validated on the rigid sphere case by comparison with analytical results. A very good agreement was found. For the covering abstract see ITRD E107776.