Flatness is an important quality parameter of heavy plates and it generally achieved through cyclic elastoplastic deformation the plate in a hot roller leveller following rolling cooling processes. To investigate optimize levelling (straightening) process, Finite Element (FE) simulations are widely used. Generally, flow curves with isotropic hardening used for simulations. However, material mig...

Constitutive modeling of material behaviour is becoming increasingly important in prediction of possible failures in highly loaded engineering components, and consequently, optimization of their design. Damage occurrence and accumulation within the material are described in this paper by means of models of kinematic and isotropic hardening according to Chaboche material model. Since the materia...

We study the numerical approximation of a static in nitesimal plasticity model of kinematic hardening with a nonlocal extension involving the curl of the plastic variable. Here, the free energy to be minimized is a combination of the elastic energy and an additional term depending on the curl of the plastic variable. In a rst step, we introduce the stress as dual variable and provide an equival...