About this Abstract |
Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Symposium
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2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
|
Presentation Title |
CIFEM: A FEM-Based Scan-Resolved Process Simulation Method With CFD Resolution |
Author(s) |
Seth Strayer, Alaa Olleak, Albert To |
On-Site Speaker (Planned) |
Albert To |
Abstract Scope |
Despite advancements in finite element (FE) thermal simulation techniques for laser powder bed fusion (L-PBF), these models employ a functional heat source model, which invokes a tedious calibration process and provides inaccurate thermal fields compared to high-fidelity computational fluid dynamics (CFD) simulations. Consequently, the multi-track melt pool size variation simulated by FE is often unreliable and cannot be matched well with experimental data. In this work, CIFEM is extended to multi-track scenarios for Inconel 718 L-PBF to help address these issues. CIFEM's machine-learned heat source model is trained to predict the thermal fields from multi-track CFD simulations with different cooling times to establish the role of the local thermal environment. By imposing these fields on the FE solution domain and coupling with the FE solver, the simulated multi-track melt pool sizes are within 10% error regarding experiment and CFD while providing substantially more accurate thermal fields to traditional FE models. |
Proceedings Inclusion? |
Planned: Post-meeting proceedings |