Inhaltszusammenfassung

In this article, a numerical solution method for the finite-strain rate-independent Cosserat theory of crystal-plasticity is developed. Based on a time-incremental minimization problem of the mechanical energy, a limited-memory Broyden-Fletcher-Goldfarb quasi-Newton method applied to a finite-difference fiscretization is proposed. First benchmark tests study the convergence to an analytic solution. Further simulations focus on the investigation of rotation localization zones, the bending of a...In this article, a numerical solution method for the finite-strain rate-independent Cosserat theory of crystal-plasticity is developed. Based on a time-incremental minimization problem of the mechanical energy, a limited-memory Broyden-Fletcher-Goldfarb quasi-Newton method applied to a finite-difference fiscretization is proposed. First benchmark tests study the convergence to an analytic solution. Further simulations focus on the investigation of rotation localization zones, the bending of a rod and a torsion experiment. » weiterlesen» einklappen

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Klassifikation

DDC Sachgruppe:
Naturwissenschaften