About this Abstract |
| Meeting |
2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
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| Symposium
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2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
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| Presentation Title |
Extending the Computational Fluid Dynamics Imposed Finite Element Method (CIFEM) to Multi-Layer Geometries for Laser Powder Bed Fusion |
| Author(s) |
Sierra Stevenson, Seth Strayer, Albert C. To |
| On-Site Speaker (Planned) |
Sierra Stevenson |
| Abstract Scope |
Computational fluid dynamics (CFD) offers highly accurate thermal field predictions for laser powder bed fusion (L-PBF) but is intractable at the part scale. The finite element method (FEM) is much faster but conventional heat source models fail to capture the complex dynamics of the thermal field within L-PBF melt pools. This trade-off was addressed in the development of the CFD-Imposed Finite Element Method (CIFEM), in which a surrogate model trained on CFD simulation data rapidly predicts thermal fields and imposes them in the FEM simulation. This work improves the robustness and accuracy of CIFEM by extending the training dataset from single-layer, constant-length scan tracks to multi-layer and variable-length scan track geometries, allowing the model to better capture layerwise dynamics seen in real builds. A major modification to the calculation method of the local thermal environment, a key component of the CIFEM input vector, is also presented. |
| Proceedings Inclusion? |
Undecided |