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New Line Model for Optimized Dislocation Dynamics Simulations

Published online by Cambridge University Press:  21 March 2011

Ronan Madec ,
Benoit Devincre  and
Ladislas P. Kubin
Ronan Madec
Affiliation:
Laboratoire d'Etude des Microstructures, CNRS-ONERA, 29 Av. de la Division Leclerc, B.P. 72, 92322 Ch tillon Cedex, France.
Benoit Devincre
Affiliation:
Laboratoire d'Etude des Microstructures, CNRS-ONERA, 29 Av. de la Division Leclerc, B.P. 72, 92322 Ch tillon Cedex, France.
Ladislas P. Kubin
Affiliation:
Laboratoire d'Etude des Microstructures, CNRS-ONERA, 29 Av. de la Division Leclerc, B.P. 72, 92322 Ch tillon Cedex, France.
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Abstract

A new model for the discretisation of dislocation lines is presented, which is optimised for mesoscale simulations of dislocation dynamics. By comparison with the existing edge-screw model, the present one provides a better description of the stress field close to the dislocation lines. It simplifies the modelling of dislocation reactions and accelerates computations by allowing to make use of larger time steps. An application to attractive junctions and forest hardening is briefly sketched.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 653: Symposium Z – Multiscale Modeling of Materials-2000 , 2000 , Z1.8
Copyright
Copyright © Materials Research Society 2001

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