Abstract
Abstract One of the major factors in road-induced noise in a vehicle is the vibration characteristics of its tires. The effects of tire cavity resonance are clarified in this paper by a mathematical approach to the excitation and by road tests. Peaks of road noise due to cavity resonance in automobile tires exist at frequencies between 230 and 300 Hz. The major peak is at the first mode of cavity resonance in the circumferential direction and is not affected by the cross-sectional shape of the tire. The noise is affected by only the first mode of cavity resonance. Therefore, by using countermeasures to this resonance, the road noise can be reduced.
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