Scaling and glassy dynamics in the relaxation of dislocation systems

Details Scaling and glassy dynamics in the relaxation of dislocation systems Scaling and glassy dynamics in the relaxation of dislocation systems

Nov 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006smpr.confe..58c&link_type=abstract

Proceedings of the International conference on Statistical Mechanics of Plasticity and Related Instabilities. August 29-Septembe

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

The relaxation of initially random systems of infinite, straight, parallel edge dislocations is studied in single slip. A relaxation model is developed based on the gradual extinction of initial density fluctuations. Exponents of the predicted power law evolution for the mean value of different powers of dislocation velocity are compared to discrete dislocation dynamics simulations. A satisfying match is found in the theoretical limit of large multipole formation rates and a weak coupling between mobile excess dislocations and background multipoles.

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