| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Dynamic Behavior of Materials X
|
| Presentation Title |
Concurrent Atomistic-Continuum Study of Crack Propagation vs. Dislocation Emission |
| Author(s) |
Boyang Gu |
| On-Site Speaker (Planned) |
Boyang Gu |
| Abstract Scope |
In this talk, we present a multiscale study using the Concurrent Atomistic-Continuum (CAC) method to investigate the crack propagation and dislocations emission at the (110) and (001) crack tip in single crystal silicon. A new 6-node prism element with 4 groups of planes as the element surface is implemented to capture dynamic cracks and dislocations simultaneously. The local stress field at the crack tip shows good agreement with the MD simulations and the 3D configuration of multiple dislocations emitted at the crack tip in experimental observations is reproduced. The CAC method captures the slip system near the crack tip, as well as the dynamic crack propagation, deflection and blunting for the mode I crack, and provides insights for the dislocation-crack interaction of nanostructured materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Modeling and Simulation, |