Nonlinear buckling analysis of sandwich functionally graded plates with grid core resting on elastic foundation

Msc. VU THO HUNG
University of Transport Technology, Hanoi, Vietnam
Msc. VUONG TUNG LAM
TW-Asia Consultants Co, Ltd, Vietnam

Configuration of a sandwich functionally graded plates with grid core resting on elastic foundation

ABSTRACT:Based on Kirchhoff’s plate theory with the geometrical nonlinearity in von Karman sense and the smeared stiffeners technique, the governing equations of sandwich functionally graded plates with grid core resting on Pasternak’s elastic foundation are derived in this paper. The nonlinear buckling behavior of sandwich plate acted on by axial loading is considered with the effects of elastic foundation by using the Galerkin method. The critical buckling loads are found according to the bifurcation criterion. Some numerical results are given and some significant remarks are obtained.
KEYWORDS: Functionally graded material, sandwich structure, buckling, plate, grid core.

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