The paper outlines a process of modeling of noise in the interior of vehicle cab (car Skoda) using the finite element method (ANSYS, SYSNOISE) and ray method (RAYNOISE). The ray method can reveal the surfaces that contribute by reflections to the noise level in the known position of the source. The results of these individual procedures of acoustic modeling are compared. Using the results of acoustic analysis, the role of primary possible noise sources, secondary panel vibrations and the role of the presence of transported persons is discussed. Acoustic optimization using rubber isolators of vibrated panel or adding of noise absorbing surface materials is discussed. On the example of the cab of the vehicle Skoda Felicia is demonstrated, that the acoustical modeling can quantitatively estimate the suggested noise control amelioration. The noise transfer function at the position of the driver's ear is analyzed.
Modeling of noise in vehicle cab
Modellierung des Geräusches in Fahrzeugkabinen
International Congress on Sound and Vibration, 7 ; 2727-2734
2000
8 Seiten, 6 Bilder, 1 Tabelle, 3 Quellen
Conference paper
English
SEA in Vehicle Development Part II: Consistent SEA Modeling for Vehicle Noise Analysis
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