Stability Analysis Of A Thick Piezoelectric
FGM Plate
Author(s)
K. M. Bajoria & P. Jadhav
Abstract
This paper investigates the stability analysis of plates made of functionally
graded material (FGM) and subjected to electro-mechanical loading. A thick
square FGM plate with piezoelectric actuator and sensor at top and bottom face
is considered. The material properties are assumed to be graded along the
thickness direction according to simple power-law distribution in terms of the
volume fraction of the constituents, while the Poisson’s ratio is assumed to be
constant. The plate is simply supported at all edges. Using first order (FOST) and
higher order shear deformation theories (HOST12), the finite element model is
derived with von-Karman hypothesis and as a degenerated shell element. The
displacement component of the present model is expanded in Taylor’s series in
terms of thickness co-ordinate. The governing equilibrium equation is obtained
by using the principle of minimum potential energy and the solution for critical
buckling load is obtained by solving the eigen value problem. The stability
analysis of piezoelectric FG plate is carried out to present the effect of power law
index and applied mechanical pressure. Results reveal that buckling strength
increases with an increase in volume fraction. It can also be improved using
piezo effects. The present analysis is carried out on newly introduced metal
based FGM which is a mixture of aluminum and stainless steel which exhibits
corrosion resistance as well as high strength property in a single material.
Keyword: functionally graded material, finite element method, piezoelectric
material, FOST, HOST12, eigen value problem, electro-mechanical loading.
Keywords
Keyword: functionally graded material, finite element method, piezoelectric
material, FOST, HOST12, eigen value problem, electro-mechanical loading.
Related Book
Other papers in this volume
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