About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing Modeling, Simulation and Machine Learning
|
Presentation Title |
Towards Large-scale Grain Growth Modeling in Powder Bed Fusion |
Author(s) |
Michael Paleos, Shawn Hinnebusch, Albert To |
On-Site Speaker (Planned) |
Michael Paleos |
Abstract Scope |
Grain growth models in the context of powder bed fusion deal with both the inherent complexity of the process and the computational expense of thermal process simulations. Cellular automata models have been successful in approximating the true physics of melt pool solidification, but they are typically confined to relatively small spatial domains. Building on recent advances in powder bed fusion process and microstructure modeling, we propose an integration framework based on several computational schemes that can lead to accurate simulations on unprecedented scales. We leverage and properly combine both the recently developed matrix-free FEM-based PAMSIM process simulator and the open-source ExaCA software. Our work centers around efficiently and accurately capturing several thermal signatures and the melt pool geometry that would then guide grain growth in a decoupled manner. This framework would enable the computational study of microstructure heterogeneity and the effect of unconventional scanning strategies and beam shaping techniques. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, ICME, |