About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Presentation Title |
Toward SmartScan 2.0 - An Intelligent Scanning Sequence Optimization Method for Reduced Part Deformation and Residual Stress in LPBF Based on Thermo-Mechanical Models |
Author(s) |
Chuan He, Chinedum Okwudire |
On-Site Speaker (Planned) |
Chuan He |
Abstract Scope |
Laser Powder Bed Fusion is an additive manufacturing process increasingly utilized across various industries. Despite its advantages, LPBF often results in undesirable part deformation and residual stress. To overcome these challenges, the authors’ previous research introduced SmartScan 1.0, a method that determines the laser scanning sequence by using thermal models to optimize for thermal uniformity. This paper presents preliminary work toward SmartScan 2.0, a new version of SmartScan that is derived based on a thermomechanical instead of a purely thermal models. The thermomechanical model used in SmartScan 2.0 consists of a thermal finite difference model combined with a mechanical finite element model. The objective function directly minimizes part deformation instead of using thermal uniformity as a proxy. SmartScan 2.0 is compared against SmartScan 1.0 in experiments involving the laser marking of beams and plates. The results show large reductions in part deformation using SmartScan 2.0 compared to SmartScan1.0. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |