About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Dynamic Behavior of Materials IX
|
Presentation Title |
G-18: Modeling Shock Wave Propagation Using a Moving Window CAC Framework |
Author(s) |
Alexander Stephen Davis, Vinamra Agrawal |
On-Site Speaker (Planned) |
Alexander Stephen Davis |
Abstract Scope |
We develop two distinct moving window approaches within a Concurrent Atomistic-Continuum (CAC) framework to model shock wave propagation through a one-dimensional monatomic chain. In the first method, the entire domain follows the shock in a conveyor fashion, while in the second method, the fine-scaled region travels through the chain by the simultaneous coarsening and refinement of the continuum regions. The CAC domain and moving window methods are verified through dispersion relation studies and phonon wave packet tests. We achieve good agreement between the simulated shock velocities and the values obtained from theory with the conveyor technique, while the coarsen-refine technique allows us to follow the propagating wave front through a large continuum domain. This work showcases the ability of the CAC method to accurately simulate propagating shocks and also demonstrates how a moving window technique can be used in a multiscale framework to study highly nonlinear, transient phenomena. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, |