About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
Spatiotemporal Modeling of the L-PBF Thermal Field History |
Author(s) |
David Shoukr, Peter Morcos, Ibrahim Karaman, Raymundo Arroyave, Alaa Elwany |
On-Site Speaker (Planned) |
David Shoukr |
Abstract Scope |
Modeling the thermal field histories in additive manufacturing (AM) is the first step in understanding the process-structure-properties-performance relationships. Thermal histories provide information about the melt-pool dynamics, solidification growth rate, and temperature gradients. These parameters can help understand crack susceptibility and formation as well as microstructure and dendritic arm spacing. Moreover, due to the thermodynamics of the AM process, understanding the structure, properties, and performance of a part requires the simulation of the thermal field history of the entire part. Current thermal models, including simplified analytical models, are extremely expensive.
In this study, spatiotemporal statistical methods are used to provide a fast and accurate description of the evolution of the thermal fields. This model takes into consideration the thermal field spatial and temporal rate of change, temperature-dependent material properties, and part geometry. The model is found to produce results equivalent to thermal models that require orders of magnitude greater computational cost. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |