DQEM for Buckling Analysis of Nonprismatic Columns with and Without Elastic Foundation

The differential quadrature element method is used to solve the buckling problems of nonprismatic column structures with and without elastic foundation. The extended differential quadrature is used to discretize the governing differential eigenvalue equations defined on all elements, the transition conditions defined on the inter-element boundary of two adjacent elements and the boundary conditions. Numerical results obtained by DQEM are presented. They demonstrate the developed numerical solution procedure.