Vibration control of laminated composite plates using embedded smart layers

Analytical solutions and finite element results of laminated composite plates with smart<br />material layers embedded in them are presented in this study. The third-order plate theory of Reddy is<br />used to study vibration suppression characteristics. The analytical solution for simply supported boundary<br />conditions is based on the Navier solution procedure. The velocity feedback control is used. Parametric<br />effects of the position of the smart material layers, material properties, and control parameters on the<br />suppression time are investigated. It has been found that (a) the minimum vibration suppression time is<br />achieved by placing the smart material layers farthest from the neutral axis, (b) using thinner smart<br />material layers have better vibration attenuation characteristics, and, (c) the vibration suppression time is<br />larger for a lower value of the feedback control coefficient.