Experimental investigation and numerical simulations of temperature and morphology in material extrusion additive manufacturing

2022 ◽  
Author(s):  
Mengyuan Zhou ◽  
Liang Si ◽  
Peng Chen ◽  
Maoyuan Li ◽  
Yun Zhang ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Additive Manufacturing ◽  
Numerical Simulations ◽  
Material Extrusion

Thermal study of clogging during filament-based material extrusion additive manufacturing: Experimental-numerical study

2021 ◽  
Author(s):  
Zahra Taheri ◽  
Ali Karimnejad Esfahani ◽  
Abas Ramiar
Keyword(s):  
Additive Manufacturing ◽  
Numerical Simulations ◽  
Numerical Study ◽  
Thermal Conditions ◽  
Experimental Measurements ◽  
Clear Understanding ◽  
Material Extrusion ◽  
Series Of Experiments ◽  
Detailed Picture ◽  
Good Agreement

Abstract One of the major drawbacks of material extrusion additive manufacturing (AM) is hot-end clogging. This study aims to answer the question, “What thermal conditions lead to clogging during filament-based material extrusion?” Answering this question requires a clear understanding of temperature distribution inside the liquefier. However, this could not be achieved only through experimental measurements. Therefore, numerical simulations were also carried out by developing a 3D finite volume model of the hot-end. The results obtained from numerical simulations show good agreement with experimental measurements. They also give us a detailed picture of the temperature gradient near the nozzle. Moreover, a series of experiments were performed to determine when clogging occurs, and some criteria for avoiding clogging were presented. These results were also compared and combined with the numerical results to investigate the thermal condition leading to clogging. As the results show, overheating the heat barrier increases the length of the filament, whose temperature is above the glass transition temperature. As this length exceeds a critical value, the filament buckles under the extruder motor force and clogging occurs.

scholarly journals Numerical simulations of the mesostructure formation in material extrusion additive manufacturing

2019 ◽  
Vol 28 ◽  
pp. 419-429 ◽  
Author(s):  
Marcin P. Serdeczny ◽  
Raphaël Comminal ◽  
David B. Pedersen ◽  
Jon Spangenberg
Keyword(s):  
Additive Manufacturing ◽  
Numerical Simulations ◽  
Material Extrusion

Impact of Carotid Stent Cell Design on Vessel Scaffolding: A Case Study Comparing Experimental Investigation and Numerical Simulations

2011 ◽  
Vol 18 (3) ◽  
pp. 397-406 ◽  
Author(s):  
Michele Conti ◽  
Denis Van Loo ◽  
Ferdinando Auricchio ◽  
Matthieu De Beule ◽  
Gianluca De Santis ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Numerical Simulations ◽  
Cell Design ◽  
Carotid Stent

Additive manufacturing of pure copper: From numerical simulations to experimental results

2021 ◽  
Author(s):  
Hagen Kohl ◽  
Lisa Schade ◽  
Gabor Matthäus ◽  
Tobias Ullsperger ◽  
Burak Yürekli ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Numerical Simulations ◽  
Pure Copper ◽  
Experimental Results

scholarly journals Experimental investigation of micro injection molding and relevant numerical simulations in 3D case

2007 ◽  
Vol 1 (1) ◽  
pp. 55-60
Author(s):  
Zhiqiang Cheng ◽  
Thierry Barriere ◽  
Baosheng Liu ◽  
Jean-Claude Gelin ◽  
Gerard Michel
Keyword(s):  
Experimental Investigation ◽  
Injection Molding ◽  
Numerical Simulations ◽  
Micro Injection Molding
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