Axisymmetric buckling analysis of laterally restrained thick annular plates using a hybrid numerical method

作者：Malekzadeh P^*; Ouji A

来源：International Journal of Pressure Vessels and Piping, 2008, 85(11): 789-797.

DOI：10.1016/j.ijpvp.2008.07.001

• Buckling
• Annular plates
• Lateral restraints
• Differential quadrature

The buckling analysis of annular thick plates with lateral supports such as two-parameter elastic foundations or ring supports is investigated using an elasticity based hybrid numerical method. For this purpose, firstly, the displacement components are perturbed around the pre-buckling state, which is located using the elasticity theory. Then, by decomposing the plate into a set of sub-domain in the form of co-axial annular plates, the buckling equations are discretized through the radial direction using global interpolation functions in conjunction with the principle of virtual work. The resulting differential equations are solved using the differential quadrature method. The method has the capability of modeling the arbitrary boundary conditions either at the inner and outer edges of thin-to-thick plates and with different types of lateral restraints. The fast rate of convergence of the method is demonstrated and comparison studies are carried out to establish its accuracy and versatility for thin-to-thick plates.

• 出版日期2008-11