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Influence of grain boundary conditions on modeling of size-dependence in polycrystals

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Abstract

In this paper, a gradient crystal plasticity model in a polycrystalline grain structure is investigated. Hereby, the focus is on the influence of the grain boundary conditions. A new type of grain boundary conditions is introduced, the so-called micro-flexible boundary condition. In particular, it is compared to existing grain boundary conditions of plastic slip. Numerical results are given for the stress–strain response as well as for the plastic slip field in the grain structure.

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Authors and Affiliations

  1. Department of Applied Mechanics, Division of Material and Computational Mechanics, Chalmers University of Technology, 41296, Gothenburg, Sweden

    Magnus Ekh & Mikkel Grymer

  2. Institute of Mechanics, Dortmund University of Technology, Leonhard–Euler-Str. 5, 44227, Dortmund, Germany

    Swantje Bargmann

Authors
  1. Magnus Ekh
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  2. Swantje Bargmann
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  3. Mikkel Grymer
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Correspondence to Swantje Bargmann.

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Ekh, M., Bargmann, S. & Grymer, M. Influence of grain boundary conditions on modeling of size-dependence in polycrystals. Acta Mech 218, 103–113 (2011). https://doi.org/10.1007/s00707-010-0403-9

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  • DOI: https://doi.org/10.1007/s00707-010-0403-9

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