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Philosophical Magazine A Volume 67, 1993 - Issue 6
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Original Articles

Computer simulation of plastic behaviour of single crystals

I. Groma Department of Physics, The University of Edinburgh, King's Buildings, Mayfield Road, Edinburgh, EH9 3JZ, UK; Institute for General Physics, Eötvös University Budapest, Múzeum krt. 6-8, PO Box 323 1445, Budapest, 8, Hungary
&
G. S. Pawley Department of Physics, The University of Edinburgh, King's Buildings, Mayfield Road, Edinburgh, EH9 3JZ, UK
Pages 1459-1470 | Received 18 Jan 1993, Accepted 22 Jan 1993, Published online: 20 Aug 2006
 
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Abstract

A computer simulation model is proposed to investigate the plastic behaviour of single crystals oriented for single slip. The dislocation system consists of parallel edge dislocations. The velocity of a dislocation is proportional to the local shear stress and the generation of new dislocation dipoles is allowed. It is shown by computations on an AMT DAP that by applying a constant shear rate the stress-strain relationship corresponds to stage I of single-crystal plastic deformation, and a long-range undulation appears in the stress field of the dislocation system.

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