This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Pass-by Noise Modelling with Boundary Elements
Annotation ability available
Sector:
Language:
English
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.
Authors
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.Also In
References
- I-DEAS Vibro-Acoustics™ User's Guide (rev 3.0) S.D.R.C. Milford, Ohio 1996
- Hamdi M.A. Mariem J.B. “A new Boundary Finite Element Method for fluid structure interaction problems” International Journal for Numerical Methods in Engineering 24 1251 1267 1987
- Hamdi M.A. “Basic Boundary Element Methods for structural-acoustics problems in low frequency range” Proc. EURO-NOISE '95 2 389 397 1995
- Nelson P.A. Elliot S.J. Active Control of Sound Academic Press 1992
- Nelson P.A. Anciant M. Hammond J.K. “Modelling acoustic sources from measurements of the radiated field” Proc. INTER NOISE 1991 1229 1232 1991
- Defosse H. Hamdi M.A. “Advanced Boundary Element Approach to Perform 3D Prediction of a Fairing tested in a Large Reverberant Chamber” Proc. EURO-NOISE '95 2 573 578 1995