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)
|
Presentation Title |
Part Deformation Constrained Multi-load Support Optimization for Laser Powder Bed Fusion |
Author(s) |
Subodh Chandra Subedi, Dan J. Thoma, Krishnan Suresh |
On-Site Speaker (Planned) |
Subodh Chandra Subedi |
Abstract Scope |
Support structures act as primary conduits for heat flow in laser powder bed fusion (LPBF). Frame supports have proven to be a good choice for LPBF, with no metal powder entrapment and ease of removal. We propose a framework for optimizing frame supports, subject to part deformation constraints. In a typical LPBF build process, supports evolve leading to time-varying thermal and structural loads. The proposed framework uses a multiload strategy to optimize support. Parts and supports are analyzed in tandem to compute the structural deformation at the end of each build layer. The optimal width of each support frame member is obtained through multi-load coupled optimization, subjected to constraints on the nodal deformation to avoid recoater collision and desired geometric accuracy. Numerical results demonstrate a reduction in part deformation when optimized supports are used. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |