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)
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Presentation Title |
Towards Tractable, Fully Time-resolved Simulations of Engineering Scale Parts Built using
the Laser Powder Bed Fusion Process |
Author(s) |
Daniel Moser, Kyle Johnson, Michael Heiden, Theron Rodgers, Scott Jensen, Michael Stender, David Saiz, Mario Martinez, Helen Cleaves |
On-Site Speaker (Planned) |
Daniel Moser |
Abstract Scope |
Simulation can help address the repeatability issues with laser additive manufacturing. Theoretically, simulation can be used to predict process-property relationships for properties such as microstructure and mechanical behavior. Practically, simulating builds of most geometries remains intractable due to the enormous number of time steps needed to resolve the laser action. There are strategies to overcome this, like heat source agglomeration and time-averaging, but these can hinder predictive capability. This work explores time integration techniques beyond traditional time stepping. These include analytical solutions, domain decomposition, and parallel-in-time methods. Assessments are made of computational cost, wall-time performance, and scalability to realistic geometries. Predictive capability is explored through estimation of model form uncertainties, consideration of the need for and effectiveness of calibration, and comparison to experimental data.
This work was supported by the Laboratory Directed Research and Development program at SNL. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525 |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |