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Abstract

With the ongoing trend of miniaturization and nanotechnology, the predictive modeling of size effects plays an increasingly important role in metal plasticity. The description of such size effects requires gradient-extended theories of crystal plasticity. We outline a new viscous regularized formulation of rate-independent gradient crystal plasticity for full multislip scenarios. To this end, we exploit in a systematic manner the long- and short-range nature of the involved variables. It is shown that the evolution of the short-range state is fully determined by the evolution of the long-range state. This separation into long- and short-range states is systematically exploited in the algorithmic treatment by a new update structure, where the short-range variables play the role of a local history base. (© 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim)