PRINCIPLE OP PIEZOELECTRIC DAMPING OF VIBRATION: AN EXPERIMENTAL INVESTIGATION

Since the vibration behaviours of a piezoelectric vibration system change with an electrical load, the Vibration of such a system will be damped, when the electrical load includes a resistance component. Based on this effect, a principle of piezoelectric damping of vibration is developed.
In this paper, piezoelectric damping configurations for both thickness and longitudinal vibrations are experimentally studied. The results show that the piezoelectric material may become a new type of material for damping and the piezoelectric vibrator can be used as a new type of damper.
The piezoelectric damping adjustment is convenient and can be carried out continuously and instantaneously.