Road Texture Induced External Tire Noise: Empirical Frequency Response Function for Tires (Vaegtexturinducerat Daeckbuller: Empirisk Oeverfoerings-Funktion foer Bildaeck)

摘要

Analyses of correlations between tire noise and road roughness (texture) are made on the basis of background data consisting of measured tire noise frequency spectra for a passenger car tire and a truck tire rolling on three road surfaces, as well as frequency spectra of the longitudinal surface profile curves recorded by a profilometer for the corresponding road surfaces. The differential frequency spectra for noise are compared to the differential spectra representing the road surface texture. As there is a distinct correlation between these differential spectra for one pair of road surfaces it is concluded that in this case road texture induced tire vibrations are the dominating generation mechanism. When this is accepted, the discussion is extended in order to calculate the frequency response function for the tire with respect to road texture.