Analytical Approach for Strongly Coupled Vibration System Composed of Two Substructures (2nd Report, Application of Analytical Approach to Vibration of Tire and Wheel on Vehicle)

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. This follows the application to tire and wheel for a rumble noise around 160 Hz 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 experiments show the improvement of road noise and verified that this approach was useful practically.