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IDENTIFICATION AND REDUCTION OF SOUND SOURCES IN CAR WHEEL SUSPENSIONS
ISSN: 0148-7191, e-ISSN: 2688-3627
Published January 15, 2000 by SAE International in United States
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The identification and reduction of sound sources in car wheel suspensions is one of today's major issues in the Automotive industry. The last five years a lot of effort has been spent identifying shock absorber noise. These investigations have now been extended towards complete suspensions. Due to its strong nonlinear characteristic, the shock absorber generates high frequency vibrations (100-900 Hz). First, the relationship between the structure borne noise and the damper behavior needs to be defined by means of a vehicle evaluation. Next the components that need to be modified are identified by comparing time-domain simulations and measurements. To deal with full suspension noise source identification and reduction some specific time-frequency techniques are applied. Additionally, some new techniques such as the 3D coherence function are proposed. Because of the transient character of suspension components, these techniques can give some insight into operating mechanisms and reduction potential of car wheel suspensions.
CitationLauwerys, X., Augusztinovicz, F., Maes, M., and Nagy, G., "IDENTIFICATION AND REDUCTION OF SOUND SOURCES IN CAR WHEEL SUSPENSIONS," SAE Technical Paper 2000-01-1437, 2000, https://doi.org/10.4271/2000-01-1437.
- Duym S, Stiens R and Reybrouck K, 1997, Evaluation of Shock Absorber Models, Vehicle System Dynamics, vol 27, number 2, pp 109-127
- Storer S, Guerci G, Morari C, Tanfoglio V, Lauwerys X and Reybrouck K, 1997, Case Studies involving the identification of problematic impulsive effects on vibration signals, SAE paper 971894
- Brite-Euram Program INVEC (integrated approach for NVH Engineering of low weight vehicles Chassis), project n° BE-1618, contract n°BRPR-CT95-005
- Augusztinovicz F, Pfliegel P, Maes M and Reybrouck K: Development of a testing method for automotive shock absorber noise, In preparation (1998)
- Van der Auweraer H, Leuridan J and Vold H: Analysis of nonstationary noise and vibration signals, Proc 19th Int. Seminar on Modal Analysis, Leuven, Vol. I. 385-406.p. (1994)
- Gade S and Gram-Hansen K, The analysis of nonstationary signals, Sound and Vibration, 40-46.p. (1997)
- Φ Dossing: Uncertainty in time/frequency domain representations. Sound and Vibration, 14-24.p. (1998)
- Uitwisseling van Technologie met Oog op Produktverbetering in Autoindustrie (UTOPIA). International co-operation project with the Technical University of Budapest, financed by the Flemish Government and supported by Monroe Belgium, LMS International and K.U.Leuven.