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This contribution presents a solution for a critical buckling force in a thin two-ring annulus. Because of the changes in the properties of each particular ring, the problem belongs to a group of plane elements with so-called cylindrical orthotropy. The purpose of this study is to determine the critical radial compressive load depending on the changes in bending rigidity of each particular ring,...
The paper deals with the elastic stability problem of thin annular plates made of moderately orthotropic material. Examples of this kind can be plates with periodically cut, parallel grooves, the areas in-between acting as very low ribs. The numerical solutions are obtained on the basis of the energy method. The chosen displacement functions can be used to solve the cases of nonaxisymmetric buckling...