Evolution of geometrically necessary dislocation density from computational dislocation dynamics Conference Paper uri icon

abstract

  • This paper presents a method for calculating GND densities in dislocation dynamics simulations. Evolution of suitably defined averages of GND density as well as maps showing the spatial nonuniform distribution of GNDs are analyzed under uniaxial loading. Focus is laid on the resolution dependence of the very notion of GND density, its dependence upon physical dimensions of plastically deformed specimens and its sensitivity to initial conditions. Acknowledgments Support from the National Science Foundation (CMMI-0748187) is gratefully acknowledged. 2009 IOP Publishing Ltd.

published proceedings

  • IOP Conference Series: Materials Science and Engineering

author list (cited authors)

  • Guruprasad, P. J., & Benzerga, A. A.

citation count

  • 2

complete list of authors

  • Guruprasad, PJ||Benzerga, AA

publication date

  • July 2009