This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Accurate Acoustic Diagnostic Analysis Using the Boundary Element Method
Annotation ability available
Sector:
Language:
English
Abstract
The prediction of sound levels in vehicles and the environment is now a common practice in automotive engineering. This has been made possible by the development of powerful tools based on boundary element techniques. These “first generation” systems provided the user for the first time with easy to use tools to predict sound levels which result from any known set of vibrations of the panels surrounding the acoustic region. This paper will describe a “second generation” acoustic system based on boundary elements, which not only enhances the accuracy of the modeling, but also provides powerful diagnostic facilities to enable the user to identify the main contributions to the sound intensity at any point of interest.
Applications are presented, and include a classical automotive engineering problem in which the software system identifies the body panels which contribute most to the noise level at the driver's right ear. Accurate information of this type is important in improving the quality of the ride experienced by the driver, as panels which are causing noise problems may be remedied by stiffening or by covering with different sound absorbing materials.
Authors
Citation
Trevelyan, J., Adey, R., Niku, S., Baynham, J. et al., "Accurate Acoustic Diagnostic Analysis Using the Boundary Element Method," SAE Technical Paper 951340, 1995, https://doi.org/10.4271/951340.Also In
References
- Brebbia, C.A. Dominguez, J. Boundary Elements: An Introductory Course 2nd Computational Mechanics Publications 1991
- Ciskowski, R.D. Brebbia, C.A. Boundary Element Methods in Acoustics Computational Mechanics Publications 1991
- Kane, J.H. The Boundary Element Method in Engineering Continuum Mechanics Prentice Hall 1994
- Adey, R.A. Niku, S.M. Baynham, J. Burns, P. ‘Acoustic diagnostic analysis using boundary elements’ Boundary Element Method XVI Computational Mechanics Publications 1994
- Trevelyan, J. Boundary Elements for Engineers: Theory and Application Computational Mechanics Publications 1994
- Ishiyama Shin-Ichi et al ‘The application of Acoust/boom - a noise level prediction and reduction code’ SAE 195 198
- BEASY User Guide Computational Mechanics, Inc. Billerica, Massachusetts 1994