In a joint project of FORD Werke AG and Darmstadt University of Technology, Automotive Engineering Department, an evaluation method dealing with problems of suspension harshness has been worked out considering objective measurements, subjective ratings and CAE simulations. Two cars were equipped with measuring systems for vibrations and interior noise. Measurements with various changes in the wheel suspension systems were carried out on different roads. The measured results were compared to the subjective ratings of a collective of non-expert drivers. Additionally, a total vehicle CAE model was built. With this model the transfer of vibrations from the knuckles to the interior of the car was simulated. This paper describes the used methods for objective and subjective assessment and some of the results concerning the influence of different suspension components on the achieved vibration comfort. Comparisons of the subjective ratings and the simulation results with the measured data are shown. Especially the vertical vibrations of the steering wheel and the longitudinal accelerations of the seat were found to correlate best with the subjective ratings of the drivers.
Objective and subjective evalution of suspension harshness
Objektive und subjektive Bewertung der Härte der Radaufhängung
1997
10 Seiten, 9 Bilder, 7 Quellen
Conference paper
English
Fahrzeug , Radaufhängung , Härte , Bewertung , CAD/CAM , Simulation , Messsystem , Schwingung , Geräusch , Modell , Gelenk (Technik) , Vergleich (System) , Lenkung (Fahrzeug) , Beschleunigung , Fahrzeugsitz , Lenkrad
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