Effect of rotational trapezoid shaped nozzle on material distribution in 3D cementitious material printing process
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 p...
| প্রধান লেখক: | , , , |
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| অন্যান্য লেখক: | |
| বিন্যাস: | Conference Paper |
| ভাষা: | English |
| প্রকাশিত: |
2018
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| বিষয়গুলি: | |
| অনলাইন ব্যবহার করুন: | https://hdl.handle.net/10356/88270 http://hdl.handle.net/10220/45693 |
| সংক্ষিপ্ত: | 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. |
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