Abstract
A semi-analytical stress solution is obtained for a rotating anisotropic disk of constant thickness and density. The solution proceeds along the classical line by dividing the disk into elastic and plastic zones, and then solving for the axially-symmetric stress distributions in each zone, matching subsequently stresses at the elastic-plastic border. The edges of the disk are supposed to be stress free and no kinematics boundary conditions are involved in the analysis. The principal axes of anisotropy coincide with the in-plane radial and circumferential directions. Comparison with an isotropic material modeling suggests an improvement in a preliminary engineering design when plastic orthotropy is accounted for.
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