Numerical analysis based on finite element method of active vibration control of a sandwich plate using piezoelectric patches

Abstract

An active method of vibration control of a smart sandwich plate (SSP) using discrete piezoelectric patches is investigated. In order to actively control the SSP vibration, the plate is equipped with three piezoelectric patches that act as actuators. Based on the classical plate theory, a finite element model with the contributions of piezoelectric sensor and actuator patches on the mass and stiffness of the sandwich plate was developed to derive the state space equation. LQR control algorithm is used in order to actively control the SSP vibration. The accuracy of the present model is tested in transient and harmonic loads. The applied piezoelectric actuator provides a damping effect on the SSP vibration. The amplitudes of vibrations and the damping time were significantly reduced when the control is ON.

Vibration suppression of thick plates with attached piezoelectric patches using 1D Carrera Unified Formulation (CUF) based finite element models

“…By utilizing a constant gain velocity feedback controller [13], it was investigated how active vibration control can be achieved with a piezo‐bonded laminated composite in the presence of partial debonding of the piezoelectric sensor and structural delamination. Active vibration control of a composite plate [14], a smart sandwich plate (SSP) [15], a smart flexible cantilever beam [16], wind turbine blades [17] using discrete piezoelectric patches was investigated. The PD and LQR controllers were used in these studies to determine the amount of actuation force required for the smart system.…”