BUCKLING ANALYSIS OF FGM PLATES RESTING ON VARIABLE STIFFNESS ELASTIC FOUNDATIONS

Abstract

This paper used the finite element technique to investigate the static
buckling behavior of functionally graded material (FGM) plates supported by an
elastic base with varying stiffness. The finite element method is formulated using
Mindlin's first-order shear deformation theory. FGM plates consist of a
combination of ceramic and metal components, with the distribution of these
materials following an exponential law. Specifically, the top side of the plate has
a higher proportion of ceramic, while the bottom side contains a higher
proportion of metal. The dependability of the calculation theory is assessed by a
comparison with previously published publications. This article examines the
impact of some variables on the static buckling response of FGM plates, including
material distribution, elastic foundation parameters, and boundary conditions.
The calculation results indicate that the value of the elastic foundation has a
significant impact. The critical buckling load and buckling mode shapes of the FGM
plate will vary based on the volume distribution of its component materials.