Car interior noise reduction problem was investigated on a real car by considering structural-acoustic mode coupling coefficients. Acoustic finite element analysis was carried out on the real passenger compartment. The results were verified experimentally and used along with the experimentally obtained structural modes in the coupling analysis. Using the structural-acoustic mode coupling coefficients, the modes which strongly contribute to the interior noise were identified and the boundary panels which could reduce noise level efficiently by structural modifcation were predicted. Also noise reduction effect was observed by numerical simulation. All of procedures could be more easily applied to the real situation than the response analysis using large commercial finite element program package.
A study on the interior noise of a passenger car
Untersuchung des Geraeuschpegels im Fahrgastraum von Personenkraftwagen
Proc. of the 7th Int. Modal Analysis Conf. ; 2 , Feb ; 1482-1488
1989
7 Seiten, 8 Bilder, 4 Tabellen, 9 Quellen
Conference paper
English
Sound Quality Evaluation of Passenger Vehicle Interior Noise
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