TWO- DIMENSIONAL ANALYSIS OF THIN SHELL- OR PLATE-LIKE MUFFLER ELEMENTS OF NON-UNIFORM THICKNESS
✍ Scribed by P.C.-C. Lai; W. Soedel
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 502 KB
- Volume
- 195
- Category
- Article
- ISSN
- 0022-460X
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✦ Synopsis
A general procedure for the analysis of curved, thin muffler elements, which can efficiently utilize the limited space in hermetically sealed compressors or compact engine installations [1], is extended to take non-uniform thickness into account. The inhomogeneous 2-D wave equation for the non-uniform thickness case is derived in two dimensional curvilinear co-ordinates defined on a curved surface by the application of Hamilton's principle. Four pole parameters are formulated from the pressure response solutions using the modal series expansion method and orthogonality property. The analyses of two types of curved, thin muffler elements with thickness variation in only one direction are demonstrated as examples. Analytical results are verified by comparison with the results obtained from a finite element program. Good agreement was achieved as long as the thickness of the muffler element is sufficiently small compared to the wavelength range of interest.