About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Mechanical Behavior at the Nanoscale VI
|
Presentation Title |
Theoretical Development of Continuum Dislocation Dynamics with Reactions: Preliminary Results |
Author(s) |
Kyle Starkey, Anter El-Azab, Thomas Hochrainer |
On-Site Speaker (Planned) |
Kyle Starkey |
Abstract Scope |
We present a new extension of the classical continuum dislocation dynamics which includes dislocation reactions in a general way. In the Discrete Dislocation Dynamics community, it has been known that modeling dislocation reactions are critical in obtaining the correct response of the material. However, the introduction of these types of reactions in continuum models are not as straightforward. In this talk, we introduce a geometric framework for incorporating these types of reactions. This theory involves defining density measures of dislocation junction nodes which give more information to continuum models on the dislocation reaction network, which we hope to provide us with enough information to model short-range interactions. We develop a set of mean-field transport relations for the new junction point densities and modified mean-field transport relations for dislocation vector densities. We also provide a general measure for when dislocations react which fits nicely into the proposed framework. |
Proceedings Inclusion? |
Planned: |
Keywords |
Other, Computational Materials Science & Engineering, |