Study on tire noise transfer path identification

Improvement of vehicle interior noise has been becoming more important for driving perception. Since NVH refinement on powertrain has achieved a lot of effectiveness, other noise sources like tire noise begin dominant. On the basis of analyzing wheel excitation force and transmission, structure transfer path of tire noise was modeled in this paper and experimental transfer path analysis was carried out. The coupled operating forces were estimated using matrix inversion method and synthesized structure-borne noise was estimated which has a good agreement with measurement data. The contribution of each transfer path to interior noise was analyzed and the dominant structure transfer path of tire noise was identified.