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Grain Boundary Effects and Failure Evolution in Polycrystalline Materials

  • W. M. Ashmawi
  • M. A. Zikry
Conference paper
Part of the Solid Mechanics and Its Applications book series (SMIA, volume 114)

Abstract

Dislocation density based multiple-slip constitutive formulations and specialized computational schemes are introduced to account for large-strain ductile deformation modes in polycrystalline aggregates. Furthermore, new kinematically based interfacial grain boundary regions and formulations are introduced to account for dislocation density transmission, absorption, and pile-ups that may occur due to grain boundary misorientations and properties.

Key words

polycrystalline materials grain boundary dislocation density crystal plasticity 

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References

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Copyright information

© Springer Science+Business Media Dordrecht 2004

Authors and Affiliations

  • W. M. Ashmawi
    • 1
  • M. A. Zikry
    • 1
  1. 1.Department of Mechanical and Aerospace EngineeringNorth Carolina State UniversityRaleighUSA

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