Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
ANALYSIS OF COMPOSITE AND FUNCTIONALLY GRADED PLATES BEHAVIOUR CONCERNING TO BUCKLING
Submission Author:
José Moita , CE , Portugal
Co-Authors:
Cristóvão Manuel Mota Soares, Jose Herskovits, José Moita
Presenter: José Moita
doi://10.26678/ABCM.COBEM2017.COB17-5513
Abstract
In this work is presented the formulation for linear buckling and geometrically nonlinear analysis of laminated composite and functionally graded plates under in-plane loads and thermal loads, using an implemented finite element model based on a non-conforming triangular flat plate/shell element with 3 nodes, and 8 degrees of freedom per node, associated with a higher order shear deformation theory. The through the thickness variation of material properties, abruptly for laminated composite plates, or continuously for FGM plates, as well as of the temperature distribution, make this type of plates usually un-symmetric to the middle-surface. Thus, in general, for this type of plates, the occurrence of bifurcation-type buckling should be study, and the centre deflection of the plates is a good indicator to anticipate this occurrence. The solutions of some illustrative examples are performed, involving different lay-up, variation of volume fractions, temperature distributions, material combinations, etc., which have significant impacts on deflections of the plates. The results are presented, compared with numerical alternative models, and discussed.
Keywords
Buckling, Composites, Functionally graded materials, Finite Elements
