| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Dynamic Behavior of Materials X
|
| Presentation Title |
Multiscale Models for the Mechanical Response of fcc Alloys Under High-strain Rates and Complex Triaxial Loads |
| Author(s) |
Alejandro Strachan, Marisol Koslowski, Ilias Bilionis, Shrenik Zinage, Chunyu Li, Ethan Holbrook, Chongxi Yuan |
| On-Site Speaker (Planned) |
Alejandro Strachan |
| Abstract Scope |
We introduce a multiscale model for the response of metallic alloys to complex triaxial loads at high-strain rates relevant to shock and high-velocity impact applications. Current models cannot capture the range of deformation processes involved and lack the accuracy to inform materials discovery and optimization efforts. We tackled this long-standing challenge via a novel approach that combines large-scale atomistic simulations, that naturally capture all possible underlying deformation mechanisms, with machine learning to identify optimal coarse-grained variables and the models that describe their evolution. Preliminary results indicate that the resulting ML models can capture the response of materials at extreme conditions for a wide range of deformations, beyond what is possible with the current state of the art. The model can capture the mechanical response originating from dislocation-based plasticity, twinning, and re-crystallization. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Machine Learning, |