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Modeling Crack Propagation in Polycrystalline Alloys using a Variational Multiscale Cohesive Method

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Proceedings of the 2nd World Congress on Integrated Computational Materials Engineering (ICME)

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Abstract

Crack propagation in polycrystalline grains is analyzed using a novel multiscale polycrystalline model. The approach combines reduced order descriptors of microstructures with explicit representation of polycrystals at critical areas (eg. crack tips). For the critical areas, refined meshes are employed to discretize each crystal. The crack propagation in the microstructure is calculated using the variational multiscale method which allows for arbitrary transgranular and intergranular crack paths. The computational load is reduced substantially by combining probabilistic representation of the macroscale problem with exact resolution of the crystals at the crack tips. One example of grain boundary failure is demonstrated in this paper, showing exceptional mesh convergence and efficiency of the numerical approach.

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Author information

Authors and Affiliations

  1. Department of Aerospace Engineering, University of Michigan, 3025 FXB building, 1320 Beal Ave, Ann Arbor, MI, 48109, USA

    Veera Sundararagahavan

  2. Department of Naval Architecture Engineering, University of Michigan, USA

    Shang Sun

Authors
  1. Veera Sundararagahavan
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  2. Shang Sun
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Editor information

Editors and Affiliations

  1. Ford Research and Advanced Engineering Laboratory, USA

    Mei Li (Technical Expert and Group Leader of Light Metals Research and ICME) (Technical Expert and Group Leader of Light Metals Research and ICME)

  2. Materials Science and Engineering Division in the Material Measurement Laboratory, National Institute of Standards and Technology (NIST), USA

    Carelyn Campbell (acting group leader for the Thermodynamics and Kinetics group) (acting group leader for the Thermodynamics and Kinetics group)

  3. University of Michigan, Ann Arbor, USA

    Katsuyo Thornton (associate professor of materials science and engineering) (associate professor of materials science and engineering)

  4. Carnegie Mellon University, USA

    Elizabeth Holm (professor of Materials Science and Engineering) (professor of Materials Science and Engineering)

  5. Fraunhofer Institute for Mechanics of Materials IWM, Freiburg and Halle, Germany

    Peter Gumbsch (position as head) (position as head)

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© 2013 TMS (The Minerals, Metals & Materials Society)

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Sundararagahavan, V., Sun, S. (2013). Modeling Crack Propagation in Polycrystalline Alloys using a Variational Multiscale Cohesive Method. In: Li, M., Campbell, C., Thornton, K., Holm, E., Gumbsch, P. (eds) Proceedings of the 2nd World Congress on Integrated Computational Materials Engineering (ICME). Springer, Cham. https://doi.org/10.1007/978-3-319-48194-4_36

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