Numerical Analysis of the Tread Grooves’ Acoustic Resonances for the Investigation of Tire Noise

Tire/road noise is one of the major sources of noise pollution in urban areas. This phenomenon can be described as the combined effect of several generation and amplification mechanisms. Acoustic resonances due to the tread grooves at the footprint region, also known as pipe resonances, are particularly important since they can generate high noise levels if they combine with harmonic generation mechanisms. This paper deals with a numerical investigation of this phenomenon and describes modeling approaches that might be used to estimate the frequencies and the mode shapes of these resonances.