چكيده لاتين :
Influence of creep on ratcheting behavior of rotating hollow disks
under load and deformation controlled cyclic loading is investigated
in this article. The disk material is assumed to obey nonlinear strain
hardening curve and the Prager and Armstrong-Frederick kinematic
hardening models are used to evaluate the back stress tensor in the
stress space. A secondary creep equation is assumed to evaluate effect
of creep time on cyclic loading behavior of the rotating hollow
disks. The angular velocity is cycled within the two different stress
limits of yield stress and twice the yield stress respectively. An interesting
conclusion is that when creep is considered, both models
predict the same ratcheting or shakedown behavior while; if creep is
excluded, the models predict different ratcheting or shakedown behavior
under mentioned loading conditions.
