Comparison and Verification of Experimental and Numerical Models for the Prediction of the Efficiency of Engine Noise Shields 951339
The reported investigations aimed at adopting and verifying numerical prediction methods for the determination of the efficiency of engine sound shields. An extended measurement series and parallel Boundary Element calculations were conducted on a simple engine simulator with various engine shields. The effect of the shields was expressed in terms of spatially averaged, narrow band Insertion Loss spectra. It was found that the efficiency of sound shields is determined by complex interactions between the source and its surroundings. These effects could be better understood and reasonably well predicted by using the BE method. The relative IL quantity can be calculated more accurately than the absolute sound field descriptors themselves.
Citation: Augusztinovicz, F., Sas, P., and Penne, F., "Comparison and Verification of Experimental and Numerical Models for the Prediction of the Efficiency of Engine Noise Shields," SAE Technical Paper 951339, 1995, https://doi.org/10.4271/951339. Download Citation
Fülöp Augusztinovicz, Paul Sas, Filip Penne
Katholieke Universiteit Leuven
SAE Noise and Vibration Conference and Exposition
Proceedings of the 1995 Noise and Vibration Conference-P-291, SAE 1995 Transactions: Journal of Passenger Cars-V104-6