Abstract
Several problems pertaining to deformation of the circular elastic isotropic plate of variable rigidity in the presence of elastic support on the edge were study. In the first problem Timoshenko model was considered. In the second problem the deformation of a multilayer plate with piecewise constant Lame coefficient along the thickness coordinate which are assumed to be constant within one layer was researched, the Zig-zag method is used for modeling. The basis for constructing a solution for both problems is the use of Lagrange’s variation principle of plates, numerical solution constructed using the Ritz method. During the research work the deflection and inflection points of the lamina cribrosa were compared for a healthy eye and for an eye with different stages of primary open-angle glaucoma for constant Lame coefficient as well as for their exponentially decreasing above. The problem of deflection of the lamina cribrosa when tacking into account the prelaminar layer was solved based on the Zig-zag method, the solution to this problem was also compared for a healthy eye and for an eye with various stages of primary open-angle glaucoma.
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