KRYLOV, V.V., WALSH, S.J. and WINWARD, E., 2003. IN: Proceedings of the 5th European Conference on Noise Control (EURONOISE 2003) Paper No. 065, Naples, Italy.
The present paper describes some recent results on the development of simplified reduced-scale models that can be
used for experimental studies of vehicle interior noise. In many important cases such simplified structural models
can be described analytically, thus providing a developer with the effective engineering tools for prediction and
mitigation of vehicle interior noise, especially on a design stage. The general approach is illustrated by a 1:4-scale
simplified model of a car developed at Loughborough University – 'QUASICAR' (QUArter –Scale Interior Cavity
Acoustic Rig). The model consists of a curved steel plate that is simply supported by two rigid side walls made of
massive wooden panels. The effect of road irregularities exciting vehicle structural vibrations is imitated by
electromagnetic shakers applied to the bottom of the steel plate. Measurements of structural vibrations and of the
acoustic pressure generated inside the model are compared with the results of theoretical predictions.