Active Elastic Support/Dry Friction Damper with Piezoelectric Ceramic Actuator

Ceramic–Ceramic Actuator Composed of Two Piezoelectric Layers with Opposite Poling Directions

A ceramic–ceramic actuator composed of two piezoelectric ceramic layers with opposite poling directions was developed. One layer of the actuator had a high coercive electric field (PZT (Pb(Zr,Ti)O3)-I; Ec5 1.1 kV/mm), while the other had a relatively low coercive electric field (PZT-II; Ec5 0.6 kV/mm). The actuator was fabricated by cofiring a green compact composed of the PZT-I powder on top o...

Development of a New Semi-active Friction Damper

The Earthquake Response Analysis of Isolation Structure with Piezoelectric Friction Damper

A new intelligent isolation system combining a piezoelectric damper with laminated rubber bearing is proposed. and used in a practical example in this paper, LQR and GPC chose as the control algorithm according to the damper. The characteristic of these two kinds of algorithm is analyzed and is used in the civil engineering vibration controlling. The results of the analysis show the performance...

LEAD-FREE BNKT PIEZOELECTRIC ACTUATOR

An actuator is a device that converts input energy into mechanical energy. According to various types of input energy, various actuators have been advanced. Displacement in the electromagnetic, hydraulic and pneumatic actuators achieve by moving a piston via electromagnetic force or pressure, however the piezoelectric actuator (piezoceramic plates) displace directly. Therefore, accuracy and spe...

Thermal Buckling Analysis of Circular FGM Plate with Actuator/Actuator Piezoelectric Layer Based on Neutral Plane

In this paper, the thermal buckling analysis of a circular plate made of FGM materials with actuator/actuator piezoelectric layers based on neutral plane, classical plate theory and first order shear deformation plate theory is investigated. Reddy's model is assumed for material properties of FGM plate. Plate under the thermal loading, nonlinear temperature rise through the thickness and clampe...