Abstract: A new kind of self-coupled damper composed of ER fluid and piezoelectric ceramic is presented. The vibration characteristics of the damper are simulated and the results show that the vibration suppression effect of the damper is manifest. It is shown in the damper test that the piezoelectric ceramic has stimulated the ER fluid. The damping of ER fluid varies and hence the damper’s resonant frequency changes. The maximum decrement of displacement amplitude can reach 30%.

Key words: Adaptive damper, Electrorheological fluid, Piezoelectric ceramic, Self-coupled, Vibration