Investigation on Smart material structures with different types of Dampers

Abstract

In recent years there is a lot of interest for researchers in the development of light weight smart sandwich structures. The sandwich beam structures consisting of elastic and viscoelastic layers having newlinesufficient in-built damping are being extensively used in structural design for effective vibration control. These sandwich beams have wide spread application in engineering as load carrying structural members with high strength to weight ratios. The fact that these light weight structures have good structural, fatigue and acoustic properties have resulted in the rapid development of sandwich structures for using air craft, automobile and other industries. In general, the free vibration newlineanalysis of these structures is carried out using passive, active and semi-active control methods. However there is a difficulty to control vibrations by means of passive and active control methods. Hence, in the present work an attempt is made to study the vibration characteristics of various sandwich and smart beams using experimental and semi-active control methods for different edge newlineconditions.