Pass-by Noise Modelling with Boundary Elements

Paper #:
  • 972014

Published:
  • 1997-05-20
Citation:
Auger, J., Hamdi, M., Amadasi, G., and Gilimondi, E., "Pass-by Noise Modelling with Boundary Elements," SAE Technical Paper 972014, 1997, https://doi.org/10.4271/972014.
Pages:
4
Abstract:
This paper presents a method for modelling Pass-By Noise from a light weight truck by using Direct and Inverse Boundary Element Techniques.One of the issues in evaluating Pass-By Noise of a vehicle is to assess the internal noise sources. In the present study, it is assumed that the noise is mainly due to sound radiation from the truck engine. Therefore a proper source model of the engine is derived by using an Inverse Boundary Element scheme involving experimental data and a boundary element model of the engine defined as a set of prescribed acceleration surfaces.Once the engine noise model has been derived, the Pass-by Noise is computed by using the standard Variational Boundary Element Method as packaged in I-DEAS Vibro-Acoustics of SDRC which includes RAYON-3D solver of STRACO SA. Finally, computed acoustics pressures at standardized Pass-By Noise locations are compared to experimental results.
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