Abstract
Low-frequency interior noise in the automobile passenger compartment can be significantly affected by the vibration behavior of the body panels surrounding the enclosed cavity. An acoustic finite element method for computing panel-excited interior noise is reviewed and an approach outlined for identifying potentially noisy panels adjacent to the passenger compartment. To illustrate its potential, the analytical method is applied to a production automobile. A structural modification suggested by the procedure is shown to reduce significantly the low-frequency interior noise to which the occupant is exposed. Experimental verification of the method is presented.
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