PERTURBATION SOLUTION OF ROTATING SOLID DISKS WITH NONLINEAR STRAIN-HARDENING

In order to determine the stresses and displacement in rotating disks with nonlinear strain-hardening a polynomial stress-plastic strain rel ation is proposed and dimensionless quantities are adopted. A dimensio nless governing equation for rotating disks is derived from the deform ation theory of plasticity, Von Mises' yield criterion. proposed stres s-plastic strain relation equilibrium and compatibility equations. Its perturbation solution is obtained and applied to compute a rotating s olid disk with nonlinear strain-hardening. The results are compared wi th those from the finite element calculation and other existing approa ches, which confirms the validity of the method presented in this pape r. (C) 1997 Elsevier Science Ltd.