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Application of a 3D-Continuum Theory of Dislocations to a Problems of Constrained Plastic Flow: Microbending of a Thin Film

Published online by Cambridge University Press:  31 January 2011

Stefan Sandfeld ,
Thomas Hochrainer  and
Michael Zaiser
Stefan Sandfeld
Affiliation:
[email protected], University Karlsruhe, Karlsruhe, Germany
Thomas Hochrainer
Affiliation:
[email protected], Fraunhofer-Institut IWM, Freiburg, Germany
Michael Zaiser
Affiliation:
[email protected], The University of Edinburgh, Edinburgh, United Kingdom
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Abstract

The advancing miniaturisation of e.g. microelectronic devices leads to an increasing interest in physically motivated continuum theories of plasticity in small volumes. Such theories need to be based on the averaged dynamics of dislocations. Preserving the line-like character of these defects, however, posed serious problems for the development of dislocation-based continuum theories, while continuum theories based on scalar dislocation densities necessarily stay on a phenomenological level. Within this work we apply a dislocation-based continuum theory, which is based on a physically meaningful averaging of dislocation lines, to the benchmark problem of bending of a free-standing thin film.

Keywords

dislocationsdefectssimulation
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1224: Symposia FF/GG – Mechanical Behavior at Small Scales — Experiments and Modeling , 2009 , 1224-GG06-04
Copyright
Copyright © Materials Research Society 2010

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References

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