| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
|
| Presentation Title |
Discrete Dislocation Dynamic Simulation of Shock-Induced Plasticity in Aluminum motivated by Atomistic Data |
| Author(s) |
Cameron J. Frampton, Douglas E. Spearot |
| On-Site Speaker (Planned) |
Cameron J. Frampton |
| Abstract Scope |
Shock is a phenomenon that occurs in a wide range of applications from aerospace, nuclear, to laser processing. Simulation of shock using Discrete Dislocation Dynamics (DDD) can bring a better understanding of the mechanisms behind it. DDD allows for a bridge between atomistic simulations of shock to experiments for validation. There are many prior atomistic simulation efforts that characterize shock responses in metals. These models can be incorporated into the DDD framework that allows for the upscaling of these behaviors without a huge computational cost increase. The objective of this work is to implement models for shockwave propagation and dislocation nucleation associated with shock using atomistic simulation data. The formation and evolution of the plastic wave behind the shock front will be characterized using dislocation density and junction density. Then virtual diffraction will be used for direct analysis of whether the dislocation network is characteristic of experimental x-ray diffraction data. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Computational Materials Science & Engineering, Modeling and Simulation |