초록 close

In this paper an energy method is presented for the linear buckling analysis of first ordershear deformable plates. The displacement fields are defined in terms of the shape functions, whichcorespond to a set of predefined points and are composed of significantly high order polynomials. Thebilinear shape functions. In order to evaluate the method, fully clamped and simply supported rectangularplates subjected to uniform uniaxial compressive loading on two opposite edges of the plate areinvestigated thoroughly and the results are compared with the exact solution given in the monograph ofTimoshenko and Gere (1961). The method is extended to the analysis of perforated plates, wherein thesuperimposed to the stiffness of the ful plate. Numerical results are then favorably compared with thoseobtained by finite element methods. Other cases such as; rectangular plates with eccentrically locatedopenings of different shapes are studied and reported in this paper with regards to the effect of aspectratio, hole size, and hole position on the buckling. For a square plate with a large circular opening at thepercent higher than the one from the FEM.