| 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 |
Spreadability of Raw Sand in Binder Jet Additive Manufacturing: Examining Feasibility Using Numerical Methods |
| Author(s) |
Ibrahim Al Qabani, Goldberg Karin, Hossein Taheri, Drew Snelling, Rafael Quirino, Genevieve Baudoin, Scott M. Thompson |
| On-Site Speaker (Planned) |
Ibrahim Al Qabani |
| Abstract Scope |
In binder jet additive manufacturing (BJAM), the consistency and homogeneity of the deposited powder layer directly influence the density and dimensional accuracy of the green part. This study investigates the printability of unrefined sand using roller spreading. The Discrete Element Method (DEM) was used to simulate the BJAM process to evaluate powder bed homogeneity and density under various operating conditions. Utilizing high-performance computing and graphics processing unit (GPU) clusters, highly-resolved simulations were performed with up to 300,000 grains. DEM simulations were executed by reconstructing particle shapes using two-dimensional images obtained through experiments. Numerical results indicate that peak powder bed density occurs at lower translational velocities, coinciding with a minimal fraction standard deviation. Powder layer thicknesses exceeding 200 micrometers were found to prevent particle jamming and subsequent void spaces across the deposited layer. This study shifts focus from high-quality foundry sand to raw earth sand for potential use in remote BJAM. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |