Coupled Vibration Analysis of Tire and Wheel for Road Noise Improvement

Tire is a key to a good performance of road induced noise (road noise). Development of the performance would be more effective by deep consideration with suspension and wheel.

Coupled vibration analysis between suspension and tire/wheel has given suggestions to understand and to improve their vibration. Next, it is applied to tire and wheel for a rumble noise around 160Hz in this paper.

Successful and practical technique is developed for this analysis. It is a modal transformation of analytical degree of freedom (DOF) at their conjunction points. The DOF is reduced from seven hundreds to some tens and finally to two by transfer path analysis (TPA).

By referencing results of numerical study, a set of modified tire and wheel is prepared. Its experimental results show the improvement of road noise and verify that this approach is useful practically.