Abstract
Tire is one of the main excitation sources of automobile vibration and noise, and it is the main factor of road noise and other abnormal noises in vehicle. In this paper, the road noise caused by the tire force transfer characteristic, the resonant band problem of the interior noise caused by the tire cavity mode, and the problem of the beat frequency caused by the tire uniformity are analyzed and studied. The problems of vehicle interior noise are improved by means of reasonable selection of tire, acoustic treatment of tire cavity, suspension dynamic absorber, and other related structural parts’ optimization. The results show that the reasonable control of the tire structural transmission characteristics and modal peak response can effectively reduce the vehicle noise level and improve the road noise. The optimization of tire uniformity and the modal avoidance of the tire and other accessory structures can avoid the problem of abnormal noise caused by beat frequency.
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