- Finite-element analysis of the large deflection bending of annular plates with variable thickness is presented. The more general Reissner plate equations as well as von Karman plate equations are used in the formulation. Stresses and deformation results are presented showing the effects of radius-to-thickness ratio (i.e. shear deformation), nonlinearity and material orthotropy. The finite-element solutions are found to be in good agreement with available exact and approximate analytical solutions. 1981.