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 language | English |
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Title of host publication | Numerical Analysis and Applied Mathematics, ICNAAM 2011 - International Conference on Numerical Analysis and Applied Mathematics |
Pages | 1531-1534 |
Number of pages | 4 |
Volume | 1389 |
DOIs | |
Publication status | Published - 2011 |
Event | International Conference on Numerical Analysis and Applied Mathematics: ICNAAM 2011 - Halkidiki, Greece Duration: 19 Sept 2011 → 25 Sept 2011 |
Conference
Conference | International Conference on Numerical Analysis and Applied Mathematics |
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Country/Territory | Greece |
City | Halkidiki |
Period | 19/09/11 → 25/09/11 |
Keywords
- dislocation dynamics
- dislocation-based continuum theory
- Frank-Read sources
- plasticity
ASJC Scopus subject areas
- General Physics and Astronomy