A COMPARISON OF NATURAL FREQUENCIES OF SMART COMPOSITE BEAM WITH ELASTIC BEAM

In this paper, numerical simulations for electromechanical finite element formulation of laminated smart adaptive composite beams are presented. The theoretical model is a three-layer piezoelectric composite beam that behaves as an axial actuating mechanism. This actuator consists of an elastic core sandwiched between two piezoelectric active outer layers. The piezoelectric layers are polarized transversely, i.e., the polarization vector is parallel to the applied electric field intensity vector. The finite element model are made using ANSYS. Free vibration eigenvalue analysis under initial conditions are established for smart adaptive composite beams and compared with of elastic beam. The analyses are done for simply- simply and fixed-fixed support.

Keywords:

Smart Structures , Piezoelectric , Finite Element , Eigenvalue Analysis