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 |
Assessment of Mesh Densities and Increment Sizes Between Goldak and Uniform Heat Source Models Using Finite Element Analysis |
| Author(s) |
Elise Roberson, Clark Hensley, Logan Betts, Matthew Priddy |
| On-Site Speaker (Planned) |
Elise Roberson |
| Abstract Scope |
Wire-arc directed energy deposition (arc-DED) involves large temperature gradients and complex melt pool geometries, which are challenging to properly and efficiently simulate. The primary moving heat source models used for arc-DED modelling are the Goldak model and the uniform model. The Goldak model provides highly accurate results, but its complex melt pool geometry requires a fine mesh, entailing long runtimes. Contrarily, the uniform model provides a simpler melt pool representation, allowing for coarser meshes and shorter runtimes, but reducing accuracy. This study assessed the trade-off of accuracy and computational expense between these models. Several mesh densities and increment sizes were simulated for each model, and the resultant thermal data was compared alongside experimentally acquired thermal images and temperature probe values. The resultant accuracy levels and runtimes for each heat source and parameter combination were compared. This knowledge will assist in the determination of future simulation parameters for desired runtimes. |
| Proceedings Inclusion? |
Undecided |