Towards Frank-Read sources in the continuum dislocation dynamics theory

Stefan Sandfeld*, Thomas Hochrainer

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Classical continuum theories of plasticity are not able to predict the mechanical response of micro devices properly. The reason is that they do not account for the evolution of the dislocation micro structure. This paper is concerned with the application of a new dislocation - based continuum theory - the "Continuum Dislocation Dynamics" theory (CDD), which preserves many essential information of systems of dislocations while retaining the computational efficiency that is inherent to all continuous descriptions. In particular, we will discuss the creation of dislocations by a Frank - Read (FR) source in the context of CDD. We demonstrate how the time - intermittent activation of sources can be incorporated into a continuous description and discuss why the sources are eventually rendered inactive.

Original languageEnglish
Title of host publicationNumerical Analysis and Applied Mathematics, ICNAAM 2011 - International Conference on Numerical Analysis and Applied Mathematics
Pages1531-1534
Number of pages4
Volume1389
DOIs
Publication statusPublished - 2011
EventInternational Conference on Numerical Analysis and Applied Mathematics: ICNAAM 2011 - Halkidiki, Greece
Duration: 19 Sep 201125 Sep 2011

Conference

ConferenceInternational Conference on Numerical Analysis and Applied Mathematics
CountryGreece
CityHalkidiki
Period19/09/1125/09/11

Keywords

  • dislocation dynamics
  • dislocation-based continuum theory
  • Frank-Read sources
  • plasticity

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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