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Shape Design of Mufflers and Enclosures Using the Finite Element Method
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English
Abstract
In this paper, the acoustical finite element method is reformulated to make geometric shape parameters, explicit variables of the resultant matrix equation. Since the acoustical design of mufflers and enclosures is largely dependent on geometric shape, such a formulation may be usefully applied. The paper includes several different illustrations of acoustical design using the new formulation; the synthesis of an appropriate shape to get a desired response, the computation of shape sensitivity information, and automated shape optimization for minimization of a given objective function.
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Bernhard, R., "Shape Design of Mufflers and Enclosures Using the Finite Element Method," SAE Technical Paper 850791, 1985, https://doi.org/10.4271/850791.Also In
References
- Young C.I.J. Crocker M.J. “Prediction of Transmission Loss in Mufflers by the Finite Element Method,” Journal of the Acoustical Society of America 57 1 Jan. 1975 144 148
- Ross D.F. “A Finite Element Analysis of Perforated Component Acoustic Systems,” Journal of Sound and Vibration 79 1 1981 133 143
- Nefske D.J. Wolf, J.A. Jr. Howell L.J. “Structural-Acoustic Finite Element Analysis of the Automobile Passenger Compartment: A Review of Current Practice,” Journal of Sound and Vibration 80 2 1982 247 266
- Bernhard R.J. “A Procedure for Explicit Determination of Acoustical Shape Design by the Finite Element Method,” ASME Paper No. 84-WA/NCA-13
- Bernhard R.J. “Synthesis of Acoustic Shapes Using the Finite Element Method,” Journal of Sound and Vibration Jan. 1985