About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing Modeling, Simulation and Machine Learning
|
Presentation Title |
Use of Sacrificial Structures for Managing Distortion and Residual Stresses in Large-Scale Hybrid Additive and Subtractive Manufacturing |
Author(s) |
Yousub Lee, Wen Dong, Bhagya Prabhune, Blane Fillingim, Bryan Lim, William Carter, Michael Sebok, Rangasayee Kannan, Lauren Heinrich, Thomas Feldhausen, Andrzej Nycz, Peeyush Nandwana, Chris Tyler, Srdjan Simunovic |
On-Site Speaker (Planned) |
Yousub Lee |
Abstract Scope |
In advanced manufacturing techniques such as additive manufacturing (AM) and hybrid AM, dynamically varying printing/machining conditions and geometries lead to complex thermal signatures. These thermal signatures influence the temporospatial evolution of plastic deformation. This, in turn, results in internal stress buildup and affecting part geometries. Mitigating distortion and residual stress can be possible by adding sacrificial geometry that is cut-off at the end. Modeling tools for predicting and controlling AM- and machining-induced distortion and residual stresses will help manipulate these effects on final part geometries. This research will explore several combinations of printing and sacrificial geometries through finite element modeling, metallurgical characterization, 3D scanning, and neutron measurement to understand the correlation between AM-induced and machining-induced residual stress. Lastly, a topology optimization method will be adopted to enhance process efficiency, reduce material waste, and minimize part distortion. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Modeling and Simulation, Process Technology |