FINITE ELEMENT MODEL OF A SMART ISOTROPIC BEAM WITH DISTRIBUTED PIZOELECETRIC ACTUATORS

Document Type : Original Article

Authors

Egyptian Armed Forces.

Abstract

ABSTRACT
In this paper, the static and dynamic loading of an intelligent beam structure with
distributed piezoelectric actuators has been studied. The structure substrate, made of
isotropic material, subjected to axial and transverse mechanical loads as well as
electrical load. The actuators layers are made of piezoelectric material of PZT type. The
one-dimensional isoperimetric Hermit cubic shape functions and the Lagrange
interpolation function are used to formulate the finite element model for the distributed
coupled electromechanical behavior. The equation of motion of the structure systems is
obtained by using the principle of total potential energy considering the Euler-Bernoulli
beam assumptions. The results of the proposed finite element model are compared to
the available finite element and analytical results of other investigators, good
agreement is generally obtained.

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