About this Abstract |
Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Symposium
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2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Presentation Title |
Computational Fluid Dynamics Modeling of Rapid Curing in 3D Printing of Structures |
Author(s) |
Md. Tusher Mollah, Jacob Van Wonterghem, Hjalte Hedegaard Rasmussen, Dan Meng, Berin Šeta, Sahand Rahemipoor, Daniel Helmuth Meile, Navid Ranjbar, Jon Spangenberg |
On-Site Speaker (Planned) |
Md. Tusher Mollah |
Abstract Scope |
Integrating rapid-curing mechanisms into the 3D printing of structures offers significant potential to accelerate printing speeds and enhance the mechanical performance. Precise control over curing kinetics is essential to better utilize material flowability during extrusion and ensure adequate solidification after deposition, thereby minimizing deformation and improving layer stability. This study investigates the impact of material curing on the stability and deformation of printed layers using computational fluid dynamics (CFD) simulations. Two constitutive models, a generalized Newtonian model and an elasto-viscoplastic model, are developed to simulate the rapid buildup of yield stress during the printing process. Simulation results demonstrate good agreement with the experiments, validating the CFD models. Furthermore, the model explains how to control the deformation of the deposited layers as curing progresses over time, providing a new tool for finding the curing requirement before printing the next layer on top. |
Proceedings Inclusion? |
Planned: Post-meeting proceedings |