| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Dynamic Behavior of Materials X
|
| Presentation Title |
Spatial Description of Dislocation Nucleation in the Shock Response of Single-crystalline Aluminum |
| Author(s) |
Andre Archer, Kaitlyn Campbell, Douglas Spearot |
| On-Site Speaker (Planned) |
Andre Archer |
| Abstract Scope |
The plastic response of materials under shock loading is a phenomenon that is critical to the development of advanced materials for spacecraft and nuclear applications. The shock response of metals well over the Hugoniot elastic limit (HEL) is well documented in the literature. Less understood is the shock response just at or slightly above the HEL. Furthermore, there is a lack of definition in how the speed of shock affects nucleation of dislocations and development of a dislocation network. Therefore, this study conducts non-equilibrium molecular dynamics (MD) simulations to provide insight into length scales for dislocation nucleation and network patterns during shock of single-crystal aluminum. MD simulation data is analyzed via spatial correlation functions to reveal the effect of shock speed on the development of dislocation networks directly behind the shock front as well as the time evolution well after the shockwave has passed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Computational Materials Science & Engineering, Mechanical Properties |