About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior Related to Interface Physics IV
|
| Presentation Title |
Phase Field Dislocation Dynamics Formulation Coupled With Fourier-Based Micromechanics Solver: Application to Grain Boundary-Dislocation Interactions |
| Author(s) |
Brayan David Murgas Portilla, Janel Chua, Nithin Mathew, Abigail Hunter |
| On-Site Speaker (Planned) |
Brayan David Murgas Portilla |
| Abstract Scope |
The phase field dislocation dynamics (PFDD) formulation is coupled to a Fourier-based computational scheme to allow the study of heterogeneous materials. PFDD allows to study the evolution of dislocations while the Fourier-based computation scheme determines the local mechanical fields arising from heterogeneities and defects using the Lippmann-Schwinger equation. The Fourier-based computational scheme allows the use of softer and harder heterogeneities, the latest being a limitation of current PFDD formulations in the literature. The current method is compared to analytical solutions of an elastic heterogeneous material and a heterogeneous material with an edge dislocation. The method is then used to study grain boundary (GB) dislocation interactions upscaling the GB structure from Molecular Dynamics to PFDD. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Computational Materials Science & Engineering, Mechanical Properties |