Abstract
This work deals experimentally with the countermeasure against squeal phenomena generated in mountain bike disk brakes. In previous our work, it was made clear that the squeal is in-plane vibration in the direction of disk surface with frequency 1kHz caused by the frictional characteristics with negative slope with respect to the relative velocity generated in the vibration system including brake components and spokes. A dynamic absorber was attached to hub in order to control squeal, and its validity was confirmed by using a bench apparatus. From experimental and analytical results, optimal parameter of damping ratio, the natural frequency, and the effect of mass ratio of dynamic absorber is established.
