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A Multiple Slip Plane Model for Crack-Tip Plasticity

Published online by Cambridge University Press:  15 February 2011

S. J. Noronha ,
S. G. Roberts  and
A. J. Wilkinson
S. J. Noronha
Affiliation:
Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, United Kingdom
S. G. Roberts
Affiliation:
Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, United Kingdom
A. J. Wilkinson
Affiliation:
Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, United Kingdom
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Abstract

A single slip plane dislocation dynamics based model for the brittle to ductile transition has been extended to have multiple slip planes around the crack-tip. The crack-tip plastic behaviour is studied for a variety of dislocation source configurations. The results are presented for the case of iron. The effect of modelling the plastic-zone as a single slip plane and as an array of parallel slip planes are compared.

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References

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