| About this Abstract |
| Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Symposium
|
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Presentation Title |
Part-Level Heat Buildup Across Directed Energy Deposition Additive Manufacturing Processes |
| Author(s) |
Elizabeth Chang-Davidson, Jose Loli, Brandon Abranovic, Jack Beuth |
| On-Site Speaker (Planned) |
Elizabeth Chang-Davidson |
| Abstract Scope |
In large-scale additive manufacturing directed energy deposition (DED) processes, heat buildup on a part level has a strong impact on residual stresses, deformation, and microstructure in the final printed part. In this work, geometric and thermal issues in thin walls are studied and then mitigated through the use of specific build strategies and interpass delay times in laser hot wire DED. The rapid semi-analytical models used for delay time selection are then generalized across process space, geometries, and DED technologies. However, in more complex geometries, part-scale thermal modeling is often prohibitively computationally intensive. To address this, a surrogate model for predicting temperatures over the height of the part across geometries and process parameters is trained on a select set of FEM results. The results from this modeling provide insight into build planning for DED systems in a process-agnostic way, enabling pre-build optimization and cutting down on waste from failed builds. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |