About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
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Presentation Title |
Defect-based Damage Model via a Mesoscale Defect Dynamics Modeling |
Author(s) |
Phu Cuong Nguyen, Ill Ryu |
On-Site Speaker (Planned) |
Ill Ryu |
Abstract Scope |
A mesoscale defect dynamics model has been developed by coupling dislocation dynamics (DD) and finite element modeling (FEM). In this concurrently coupled model, the DD framework tracks the dynamic evolution of dislocation microstructure, while the stress fields with the given plastic strain (or transformation strain) field from DD are calculated in the finite element model. In this talk, we will present a dislocation-based damage model using the developed mesoscale defect dynamics model. In contrast to continuum based phenomenological models, our model could provide a unique opportunity to investigate detailed dynamic evolution of microstructure. Especially, the collective motion of dislocations could be correlated with the macroscopic damage behavior of the materials in various loading conditions and extreme environments. Additionally, micromechanical characterization results of single crystalline show good agreement with observations in terms of defect microstructure. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Computational Materials Science & Engineering, Modeling and Simulation |