| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Modeling Carbon Fiber Suspension Dynamics for Additive Manufacturing Polymer Melt Flows |
| Author(s) |
Jason Pierce, Douglas Smith |
| On-Site Speaker (Planned) |
Jason Pierce |
| Abstract Scope |
The addition of short carbon fibers to the feedstock of large-scale polymer extrusion/deposition additive manufacturing results in significant increases in mechanical properties dependent on the fibers’ distribution and orientation in the beads. In order to analyze those factors, a coupled computational fluid dynamics (CFD) and discrete element modeling (DEM) simulation system is utilized to model the behavior of fibers in nozzle geometries after calibrations in simple shear flows. The DEM model uses bonded discrete particles to make up flexible and breakable fibers that interact with each other in alignment with established literature as well as with the variable flow and geometries present in nozzles. Results enable determination of proper Coefficient of Interaction values as well as provide enhanced insight into the evolution of fiber orientation during deposition over existing models through individual fiber tracking over time and space on multiple parameters of interest such as orientation, flexure, and contact forces. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |