Abstract

Piezoelectric shunt damping is a damping technique using a piezoelectric element which can act both a sensor and an actuator. A circuit attached to the piezoelectric element is called the shunt circuit, and has the characteristics of the absorber. Many studies use the circuits with linear characteristics, but it becomes possible to have more complex characteristics by virtual admittance. In this paper, the nonlinear absorber called autoparametric vibration absorber is realized by piezoelectric shunt damping with the virtual admittance.

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