Buckling Analyses of Rectangular Plates Composed of Functionally Graded Materials by the New Version of DQ Method Subjected to Non-Uniform Distributed In-Plane Loading

In this paper, the new version of differential quadrature method (dqm), for calculation of thebuckling coefficient of rectangular plates is considered. at first the differential equationsgoverning plates have been calculated. later based on the new version of differential quadraturemethod, the existing derivatives in equation are converted to the amounts of function in the gridpoints inside the region. having done that, the equation will be converted to an eigen valueproblem and the buckling coefficient is obtained. solving this problem requires two kinds ofloading: (1) unaxial half-cosine distributed compressive load and (2) uni-axial linearly variedcompressive load. having considered the answering in this case and the analysis of the effect ofnumber of grid points on the solution of the problem, the accuracy of answering is considered, andalso the effect of power law index over the buckling coefficient is investigated. finally, if the caseis an isotropic type, the results will be compared with the existing literature.