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An Acoustic Design Optimization Technique for Automobile Audio Systems
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1989 by SAE International in United States
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The automobile audio system is designed to operate in a rather confined space of the passenger cabin. Designing a sound system which will produce the best sound quality within the passenger compartment requires several factors to be considered, such as the positioning of the speakers, the damping introduced by the walls, the size and shape of the enclosure, etc. Finite element modeling of the cabin is an effective means in the response evaluation of the audio systems. The finite element modeling process combined with optimization techniques, however, makes this design evaluation process even more efficient in determining the optimum conditions for a speaker system inside the automobile passenger cabin.
A typical automobile passenger compartment has been considered in this paper to demonstrate the application of an optimization technique to the acoustic design of the audio system. The air inside the cabin enclosure has been modeled using the acoustic fluid element of the ANSYS® program, while the walls were assumed to be rigid surfaces. For a given location of the speakers in the automobile passenger cabin, the orientation of the speakers and the damping of enclosure walls have been varied in an attempt to obtain a flat sound level response over a frequency band in the audio range. The objective function of the design is the difference between the maximum and minimum response sound pressure level, Δ(SPL), at a given location. This location has been chosen to represent the position of the ears of a listener in the front seats of the cabin.
CitationJamnia, M. and Rajakumar, C., "An Acoustic Design Optimization Technique for Automobile Audio Systems," SAE Technical Paper 890115, 1989, https://doi.org/10.4271/890115.
- Yokota H. Suzuki T. “A Compact Disc Player for Automobile Applications” Audio Systems for the Automobile , SP745 SAE International Congress and Exposition Detroit, Michigan February 29-March 4, 1988
- Kimura Y. Ogawa M. Terai K. Nakama Y. Hanakawa E. “Audio-Visual PANA CAPSULE” Audio Systems for the Automobile , SP745 SAE International Congress and Exposition Detroit, Michigan, February 29-March 4, 1988
- Cox J. C. Ashley J. R. “Loudspeaker Drivers” SAE 1988
- Kinsler Z. E. Frey A. R. Coppens A. B. Sanders J. V. Fundamentals of Acoustics 3rd John Wiley 1982 New York
- Rao S. S. The Finite Element Method in Engineering Pergamon Press 1982 Oxford
- Gipson G. S. Boundary Element Fundamentals - Basic Concepts and Recent Developments in the Poisson Equation Computational Mechanics Publications 1987 UK
- Doyle G. R. Jr. Faulkner L. L. “Three-Dimensional Finite Element Acoustic Pressure Analysis with Complex Impedence” ASME Vibration Conference, Finite Element Applications in Acoustics September 1981
- Flanigan D. L. Borders S. G. “Application of Acoustic Modeling for Vehicle Boom Analysis” SAE Conference on Structural Mechanics April 1984
- Kagami N. Honda N. Nishio K. “Analysis of Booming Noise in Van-Type Vehicle by Component Mode Synthesis Method” SAE Paper No. 880079 1988
- Olson L. Vandini T. “Eigenproblems from Finite Element Analysis of Fluid-Structure Interaction” AIAA 1st National Fluid Dynamics Congress Cincinnati, Ohio July 1988 Paper No. 88-3690
- Banerjee P. K. Ahmad S. Wang H. C. “A New BEM Formulation for the Acoustic Eigenfrequency Analysis” International Journal for Numerical Methods in Engineering 26 1988
- Geddes E. Porter J. Tang Y. “A Boundary Element Approach to Finite Element Radiation Problems”
- Tseng C. H. Arora J. S. “On Implementation of Computational Algorithms for Optimal Design 1: Preliminary Investigations” International Journal for Numerical Methods in Engineering 26 1988
- Tseng C. H. Arora J. S. “On Implementation of Computational Algorithms for Optimal Design 2: Extensive Numerical Investigations” International Journal for Numerical Methods in Engineering 26 1988
- Barthelemy J. M. Riley M. F. “Improved Multilevel Optimization Approach for the Design of Complex Engineering Systems” AIAA Journal 26 3 March 1988
- Vanderplaats G. N. “Multidisciplinary Shape Optimization” The Optimum Shape-Automated Structural Design Bennett J. A. Botkin M. Plenum Press NY 1986
- Kohnke P. ANSYS Engineering Analysis System: Theoretical Manual Rev. 4.3 November 1987 Swanson Analysis Systems, Inc. Houston, PA
- DeSalvo G. J. Gorman R. W. ANSYS Engineering Analysis System: User's Manual Vol. I and II Rev. 4.3 June 1987 Swanson Analysis Systems, Inc. Houston, PA
- Swanson J. A. Marx F. J. “Design Optimization Including Integrated Solid Modeling Using the Finite Element Program ANSYS” National OEM Design 1985 Show and Conference September 1985
- Imgrund M. “Design Improvements Using Finite Elements and Optimizing with Approximate Functions” 9th Conference on Electronic Computations February 1986
- Imgrund M. Wheeler M. J. “Reducing Design Costs by Integrating Finite Elements and Optimization Techniques” 1986 Spring National Design Engineering Show March 1986
- Zienkiewicz O. C. Newton R. E. “Couples Vibrations of a Structure Submerged in Compressible Fluid” Symposium on Finite Element Techniques University of Stuttgart Germany June 1969
- Imgrund M. C. “Using the Approximate Optimization Algorithm in the ANSYS Program for the Solution of Optimum Convective Surfaces and Other Thermal Design Problems” 5th International Conference on Numerical Methods in Heat Transfer Montreal, Canada June 1987
- Beazley P. K. Design Optimization ANSYS Rev. 4.3 Tutorials Swanson Analysis Systems, Inc. March 1987