This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
On the Use of the Fast Multipole Method for Accurate Automotive Body Panel Acoustic Load Predictions
Technical Paper
2007-01-2313
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Knowledge of the external sound field around a car body is critical for vehicle acoustic development. Airborne isolation predictions, and thus panel and trim design depend on this data. Nowadays, such information is the result of experimental methods, as previously investigated simulation solutions proved either too costly, or not precise enough. In this paper, we investigate the use of a method combining computational efficiency and results accuracy: the Fast Multipole Method. This boundary-integral method uses an iterative solver and does not require a full assembly and factorization of the system matrix, thus allowing precise calculations over an extended frequency range even for large objects. In the present study, we demonstrate the potential of the method on a mid-range van, the Renault Scenic.
Recommended Content
Authors
Citation
Chaigne, S., Sylvand, G., Duceau, E., and Simon, J., "On the Use of the Fast Multipole Method for Accurate Automotive Body Panel Acoustic Load Predictions," SAE Technical Paper 2007-01-2313, 2007, https://doi.org/10.4271/2007-01-2313.Also In
SAE 2007 Transactions Journal of Passenger Cars: Mechanical Systems
Number: V116-6; Published: 2008-08-15
Number: V116-6; Published: 2008-08-15
References
- Hong S.Bum et al. A Computational Approach for Evaluating the Acoustic Detection of a Military Vehicle SAE conference Traverse City, MI 2005
- Vlahopoulos N. et al. Energy Boundary Element Method for Computing High Frequency Acoustic Fields around Vehicle Structures 5 th LMS Conference Munich, Germany 2006
- Huang L. et al. Development of a Luxury Vehicle Acoustic Package Using SEA Full Vehicle Model SAE conference Traverse City, MI 2003
- Blanchet D. et al. Development of a Modeling Technique for Vehicle External Sound Field Using SEA Internoise 2004 Prague, Czech Republic 2004
- Charpentier A. et al. Full Vehicle SEA Model Uses Detailed Sound Package Definition To Predict Driver's Headspace Acoustic Response Internoise 2004 Prague, Czech Republic 2004
- Meier C. Simulating the Noise Radiation of a Powertrain: Chances and Limits ISMA 2004 Leuven, Belgium 2004
- Sylvand G. PhD thesis, Ecole Nationale des Ponts et Chaussées France 2002
- Bertoloni C. et al. An SEA based procedure for the definition of sound package component targets starting from global vehicle targets Rieter Automotive Conference Lucerne, Switzerland 2003
- Marburg S. Six boundary elements per wavelength. Is that enough Journal of Computational Acoustics 10 1 25 51 2002
- Hamdi M.A. PhD thesis Université de Technologie de Compiègne France 1981
- Fischer M. The Fast Multipole Boundary Element Method and its Application to Structure-Acoustic Field Interaction PhD thesis Universität Stuttgart Germany 2004
- Sylvand G. Wave equation in acoustics: Accelerating the Retarded Potentials using the Time Domain Multipole Method Research Report Nr. 5017 INRIA, France 2003