THE DQ SOLUTION OF BUCKLING OF COLUMN UNDER AXIAL LOADING

In this paper, the differential quadrature method(DQM) is briefly described, and is used to deal with the problem of thebuckling of a column under axial loading. The non-linearequations are solved by the Newton-Raphson method. And the generalizedeigenvalue equation is solved under a linearhypothesis. We obtain the displacement at anyposition and the critical value at the bifurcation point. Numerical resultsshow that the differential quadrature method possesses a higher accuracy andis easier to implement as compared with the analytic solution and other approximatesolutions for the problem.