MATERIAL DAMPING ANALYSIS OF SMART HYBRID COMPOSITE LAMINATED PLATE STRUCTURES

Material damping analysis of a generally laminated smart hybrid compos ite plate has been presented in this paper. The present analytical for mulation is an integrated micro-macro-mechanical method. Analytical eq uations derived at the lamina level together with a classical laminate d thin plate theory predict the equivalent material specific damping c apacity (SDC) of a general smart hybrid composite laminated plate stru cture. The micro-mechanical equations based on the mechanics of materi al have been used for the calculation of the elastic stiffness and SDC of an intraply hybrid composite lamina. Present objective is mainly t o get a first hand information on the basic material damping behavior of hybrid composite laminate. Therefore, numerical studies have been c arried out for a typical shape memory alloy (SMA) smart composite lami nated plate model. The effects of the laminate fiber orientation and t he SMA volume fraction on the SDC and natural frequencies of the lamin ate were evaluated.