Kinematic criteria of dynamic shakedown extended to nonassociative constitutive laws with saturation nonlinear hardening (Q1901516)

Summary: The class of elastic-plastic material models considered allows for nonassociativity, nonlinear hardening and saturation in the sense that the static internal variables are constrained by a bounding surface described through convex bounding functions. With reference to finite element discretization in space using generalized variables, two dynamic shakedown criteria are established by a kinematic approach in Koiter's sense, based on weak constitutive restrictions and centered on two suitable definitions of admissible yield cycles.