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 |
NEW TIME (was 2:10 pm) High-fidelity Modeling of Multi-material Additive Manufacturing: From Micro-/Nano-particle Reinforced Composites to In-situ Alloying |
Author(s) |
Wentao Yan |
On-Site Speaker (Planned) |
Wentao Yan |
Abstract Scope |
Additive manufacturing possesses promising capabilities of fabricating new materials by mixing multi-material powders and manipulating chemical compositions. In this talk, we will present our latest work on high-fidelity modeling of the complex additive manufacturing process: from powder spreading to melting. To evaluate the mixture uniformity of the powder layer/stream, we employ the computational fluid dynamics (CFD) and discrete element method (DEM) coupling method to simulate the powder spreading/blowing processes of mixed multi-material powders. To thoroughly understand the material composition distribution in the melting procedure, we develop a multi-physics thermal-fluid flow model to simulate the different melting/flow/solidification behaviours of different powders as well as the interactions between solid powders and molten pool. Various scinarios are simulated from micro-/nano-particle reinforced composites to in-situ alloying for new materials. All these models are validated against experiments, and show appealing potentials to provide guidance for additive manufacturing of mixed powders. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |