Abstract
This study presents dynamic behavior of a small size tire. A small size tire is used for personal mobility, for example, a bicycle, a wheelchair and so on. There are various steps and unevenness road in the actual traffic environment. The vibration is occurred when the small size tire passes a step or an evenness road. For the vehicle design, the force initiated by this vibration should be evaluated. In this study experiments are made using special device for behavior on bump for small size tire. Numerical model for small size tire is formulated by using mulitibody dynamics. In experiments, several types of step were used with various vehicle speeds. From measurements of tire, the acceleration acting on tire and the vertical displacement of tire, the effect of experimental condition were discussed. Furthermore numerical model is validated by experimental results.
