Evolution of geometrically necessary dislocation density from computational dislocation dynamics
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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.
IOP Conference Series: Materials Science and Engineering
author list (cited authors)
Guruprasad, P. J., & Benzerga, A. A.
complete list of authors
Guruprasad, PJ||Benzerga, AA