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)
|
| Presentation Title |
Generalizing the Computational Fluid Dynamics Imposed Finite Element Method (CIFEM) to Varied-Geometry, Multi-layer Simulations of Laser Powder Bed Fusion |
| Author(s) |
Sierra Stevenson, Seth Strayer, Albert C. To |
| On-Site Speaker (Planned) |
Sierra Stevenson |
| Abstract Scope |
Functional heat source models in the finite element method fail to capture thermal fields from the laser powder bed fusion process as accurately as high-fidelity computational fluid dynamics (CFD) simulations, but CFD simulations are prohibitively expensive at the part scale. To address this, the CFD-imposed Finite Element Method (CIFEM) was developed, which employed a surrogate model trained on single-layer, constant-length multi-track CFD data to rapidly predict thermal fields and impose them in a finite element method simulation. This work extends CIFEM’s predictive capabilities to a wider range of build geometries by training on varied-length scan track simulations as well as multi-layer simulations, yielding a significant increase in accuracy to the previous CIFEM model while preserving the same speedup from CFD. A revised local thermal environment calculation is also presented, improving robustness to varied scan geometries. |
| Proceedings Inclusion? |
Undecided |