Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/88270
Title: Effect of rotational trapezoid shaped nozzle on material distribution in 3D cementitious material printing process
Authors: Li, Mingyang
Lao, Wenxin
He, Lewei
Tan, Ming Jen
Keywords: DRNTU::Engineering::Civil engineering::Construction technology
DRNTU::Engineering::Mechanical engineering::Prototyping
Additive Manufacturing
3D Cementitious Material Printing
Issue Date: 2018
Source: Li, M., Lao, W., He, L., & Tan, M. J. (2018). Effect of rotational trapezoid shaped nozzle on material distribution in 3D cementitious material printing process. Proceedings of the 3rd International Conference on Progress in Additive Manufacturing (Pro-AM 2018), 56-61. doi:10.25341/D4ZP4W
Abstract: 3D cementitious material printing process, which is typically used in building and construction area, is getting attractive for both industry and academic. Rotational rectangular nozzle is widely applied in 3D cementitious material printing process to improve surface finishing while maintaining printing speed. However, due to the fact that curved printing path has longer outer side than inner side, material printed by rotational rectangular nozzle in curved printing trajectories becomes unevenly distributed, causing deposited filament to be offset from expected position. In order to ensure uniform material distribution for curved printing trajectories, rotational trapezoid nozzle shape is proposed for 3D cementitious material printing process. In this paper, the material distributions for various trapezoid nozzle were studied by numerical simulations. Validation experiments showed that these simulation results can be used to predict material distribution for curved printing trajectories with trapezoid shaped nozzle. A variable geometry nozzle utilizing the simulation results as controller was then proposed for 3D cementitious material printing process.
URI: https://hdl.handle.net/10356/88270
http://hdl.handle.net/10220/45693
DOI: 10.25341/D4ZP4W
Rights: © 2018 Nanyang Technological University. Published by Nanyang Technological University, Singapore.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:Pro-AM Conference Papers

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