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In the present paper a new approach for investigating corrugated composite plate of wave form is proposed, regarding this plates as a combination of parts of shallow cylindrical shells with alternative curvatures. It reduces to no use of Seydel’s empirical formulas and sufficiently apply to composite plates. | Vietna m J ournal of Mecha nics, VAST, Vol. 30, No. l (2008), pp. 55 - 66 STATIC AND DYNAMIC ANALYSIS OF LAMINATED COMPOSITE PLATES WITH INTEGRATED PIEZOELECTRICS Tran lch Thinh Hano i University of Technology Le Kim Ngoc Vietnam Electricity Abstract . A Finite E lement model based on F irst-order Shear Deformat ion Theory is developed for t he static shape control and vibrat ion control of la minated composite plates integrated wit h piezoelectric sensors a nd act uators . A nine-node isoparametric rectangular element w it h 45 degrees of fre edom for the generalized displacements and 2 electrical degrees of freedom is implemented for t he static and dynamic ana lyses. The model is validated by comparing wit h existing resul ts do cumented in t he literature . Some numerical res ul ts are presented. It is conclud ed that t he shap e of the piezoelectric lam inated composite plates can reach the des ired shape t hro ugh passive contro l or active control. T he influence of st acking sequence of composite plat.es and posit ion of piezoelectric layers a nd sensors/actuators patches on the response of t he piezoelectric composite plates is evaluated. 1. INTRODUCTION Two bas ic phenomen a characteristic piezoelectric materials and permit their use as sensors and actuators in intelligent structures. Piezoelectric materials can generate an electric charge when deformed , a property called the direct piezoelectric effect . The convers e piezoelectric effect occurs when an electric field acts on a piezoelectric material to generate mechani cal stresses and strains within t he material [1] [2] . Based on these phenomena, in the recent years, there has been an increase in the development s of the lamina ted co mposite plat es integrated with piezoelectric materi als. The composite structures are bonded or emb edded with piezoelectric materi als in thin layers can great ly enhance the performance of existing structures such as sensory, adapting with static or dynamic .
