Tyre vibrations are one of the main sources of noise that is generated by rolling tyres, and hence also of road traffic noise in general. To predict external tyre road noise, models able to capture detailed vibrations at high frequencies are very desirable in the research setting and in the tyre manufacturing industry. A high frequency three-dimensional tyre model based on the elastic field equations has been presented previously by Larsson. This model makes it possible to calculate the response caused by a force in both the radial and tangential directions at high frequencies, including the local deformation at the excitation point. Now results from this tyre model have been compared with measured data. The effect of the measurement equipment has been included in the model and the model is demonstrated and validated against measured radial and tangential point and transfer mobilities. The agreement is good for radial point mobilities, capturing the local behaviour at the excitation point. The radial transfer mobilities also agree well with measured data. The tangential point and transfer mobilities also show good agreement with measured data in characteristics and levels, if the boundary conditions are changed. Finally, the benefits and limitations of the models are discussed.
Validation of a high frequency three-dimensional tyre model
Validierung eines hochfrequenten dreidimensionalen Reifenmodells
Acta Acustica united with Acustica ; 91 , 1 ; 121-131
2005
11 Seiten, 21 Bilder, 1 Tabelle, 10 Quellen
Aufsatz (Zeitschrift)
Englisch
Akustik , Fahrzeugreifen , mathematisches Modell , Validierung , Mechanik , Frequenzbereich , Messung mechanischer Größen , Messung akustischer Größen , Schallfeld , Schallabstrahlung , Druck (Mechanik) , Wellenlänge , Wellenausbreitung , numerische Simulation , Finite-Elemente-Methode , Elastizitätsmodul , Versuchsaufbau
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