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 |
Modelling Fiber Orientation during Additive Manufacturing Compression Molding Processes |
Author(s) |
Berin Seta, Md. Tusher Mollah, Vipin Kumar, Deepak Kumar Pokkalla, Seokpum Kim, Ahmed Arabi Hassen, Jon Spangenberg |
On-Site Speaker (Planned) |
Berin Seta |
Abstract Scope |
The production of high-performance thermoplastic composites reinforced with short carbon fibers can be achieved by a novel “additive manufacturing-compression molding” technique. An advantage of such combination is two-fold: controlled fiber orientation in additive manufacturing and less void content by compression molding. In this study, a computational fluid dynamics model has been developed to predict the behavior of printed layers during fiber-reinforced thermoplastic extrusion and subsequent compression molding. The fiber orientation was modelled with the Advani-Tucker hybrid closure model. The interaction between the fibers is included using rotary diffusion coefficient which becomes significant in concentrated regimes. Finally, the second order orientation tensor is coupled with the momentum equation as an anisotropic part of the stress term. The effect of processing parameters on the behavior of printed layers was investigated to determine the favorable printing scenarios. The developed numerical model enables design of high-performance composites with tunable mechanical properties. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |