1 - Interaction Vehicle - Infrastructure Systemic understanding of vibroacoustic phenomena occuring from the source to the surrounding vehicle environment and optimization solutions to reduce generated noise and vibrations : modelling of rolling noise, tyre / pavement or wheel / rail contact, taking into account nonlinear interaction phenomena in the contact patch, optimization of low noise pavements, dynamic traffic modelling, modelling of complex vibrating sources, infrastructure / ground vibration propagation in floors and in buildings. Theme responsibles : Philippe KLEIN (IFSTTAR), Guillaume COQUEL (RATP)
Teams : IFSTTAR, CSTB, SNCF, PCA, ENSTA, UR Navier, UME, UTAC, LMA, RATP, CETE
2 -Interior and exterior acoustics of vehicles
Noise impacts associated with new engines, impacts of low-noise or silent vehicles on people in terms of noise emissions as safety, acoustic comfort inside vehicle, relationships between mechanical and perceptual parameters of noisy structures, passive and active materials to attenuate acoustic waves and vibrations, vibroacoustic models adapted to perception aeroacoustics vibration / sound multi-exposure.
Theme responsibles : Marie-Agnès PALLAS (IFSTTAR), Christophe LAMBOURG (GENESIS), Olivier Sauvage (PSA)
Teams : SNCF, PCA, LTDS, GENESIS, UTAC, LAUM, LMA, RATP, ENTPE, IFSTTAR, IFPEN,UME, CETE, LMRTE, LVA
3 - Propagation : noise / weather relationship and innovative means of protection
Noise / weather relationship and innovative means of protection : coupling of acoustic propagation with weather effects in both urban and suburban, complex topography, development of prediction methods in urban areas, statistical study of the weather noise relationship, studies on scale-models and in situ, optimization of low-height noise barriers for urban use, optimization of stratified layers for uneven walls and porous materials for walls in free field or enclosures.
Theme responsibles : Benoît GAUVREAU (IFSTTAR), Fabrice JUNKER (EDF R&D)
Teams : IEDF, IFSTTAR, CSTB, LMFA, CSTB, UR Navier, LAUM, LMPC, CETE, ENTPE
4 - Man, society and sound :
Definition and validation of exposure indicators in urban areas, of perception descriptors and noise effects on auditory perception, performance and sleep, effects of noise in the long term human responses to changes in the urban sound environment, effects related to multi-source or multi-pollution situations, soundscape characterization, socio-economic aspects of the sound environment, social demand about quality of the sound environment.
Theme responsibles : Chrystèle PHILIPPS-BERTIN (IFSTTAR), Sabine MEUNIER (LMA)
Teams : ACOUCITE, CRESSON, CSTB, EDF, ENTPE, GENESIS, GRECAU-Bx, IFSTTAR, LMA, LMRTE, SNCF, PCA, CETE, LVA
