Summary of results
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The results obtained are very satisfactory for cells QUAD8 regardless of the modeling used (AXIS or AXIS_FOURIER): the uncertainties in the critical pressure do not exceed 0.104%.

However, it should be noted that modeling AXIS_FOURIER is much less accurate with TRIA6 meshes than with QUAD8 meshes.

This test made it possible to test and compare models AXIS and AXIS_FOURIER in linear Euler buckling of a thin circular structure subjected to an external compression force uniformly distributed on its contour.