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- W55073077 abstract "Current active vibration suppression systems usually consist of piezoelectric extension actuators bonded to the surface or embedded within the structure. The use of piezoelectric shear actuators/sensors has been proposed as an alternative, where the electric field is applied perpendicular to the direction of polarization to cause shear deformation of the material. We present an exact analysis and active vibration suppression of laminated composite plates with embedded piezoelectric shear actuators and sensors. Active vibration suppression is implemented with positive position feedback (PPF) and velocity feedback. Frequency response curves using various controller frequencies, controller damping ratios and scalar gains demonstrate that an embedded shear actuator can be utilized for active vibration damping. In addition, an experimental and finite element investigation of the active vibration suppression of a sandwich cantilever beam using piezoelectric shear actuators is also performed. The beam is constructed with aluminum facings, foam core and two piezoelectric shear actuators. It is shown experimentally for the first time that piezoelectric shear actuators can be utilized for active vibration suppression. There are significant reductions in beam tip acceleration amplitudes and settling time as a result of the positive position feedback. Finite element simulations show good comparison with the experimental results." @default.
- W55073077 created "2016-06-24" @default.
- W55073077 creator A5023605361 @default.
- W55073077 date "2003-01-01" @default.
- W55073077 modified "2023-09-27" @default.
- W55073077 title "Active Vibration Suppression of Smart Structures Using Piezoelectric Shear Actuators" @default.
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