A series of tests have been performed on a production vehicle to determine the characteristics of the external turbulent flow field in wind tunnel and road conditions. Empirical formulas are developed to use the measured data as source levels for a Statistical Energy Analysis (SEA) model of the vehicle structural and acoustical responses. Exterior turbulent flow and acoustical subsystems are used to receive power from the source excitations. This allows for both the magnitudes and wavelengths of the exterior excitations to be taken into account - a necessary condition for consistently accurate results. Comparisons of measured and calculated interior sound levels show good correlation.
Vehicle Wind Noise Analysis Using a SEA Model with Measured Source Levels
Sae Technical Papers
SAE 2001 Noise & Vibration Conference & Exposition ; 2001
2001-04-30
Conference paper
English
DOAJ | 2022
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