scholarly journals Simplified numerical model for the laser metal deposition additive manufacturing process

2017 ◽  
Vol 29 (2) ◽  
pp. 022304 ◽  
Author(s):  
Patrice Peyre ◽  
Morgan Dal ◽  
Sébastien Pouzet ◽  
Olivier Castelnau
3D Printing ◽  
2017 ◽  
pp. 172-182 ◽  
Author(s):  
Rasheedat M. Mahamood

Laser metal deposition process belongs to the directed energy deposition class of additive manufacturing process that is capable of producing highly complex part directly from the three dimensional (3D) computer aided design file of the component by adding materials layer after layers. Laser metal deposition process is a very important additive manufacturing process and it is the only class of additive manufacturing process that can be used to repair valued component parts which were not repairable in the past. Also because this additive manufacturing process can handle multiple materials simultaneously, it is used to produce part with functionally graded material. Some of the features of the laser metal deposition process are described in this chapter. Some experimental studies on the laser metal deposition of Titanium alloy- composite are also presented.


Author(s):  
Rasheedat M. Mahamood

Laser metal deposition process belongs to the directed energy deposition class of additive manufacturing process that is capable of producing highly complex part directly from the three dimensional (3D) computer aided design file of the component by adding materials layer after layers. Laser metal deposition process is a very important additive manufacturing process and it is the only class of additive manufacturing process that can be used to repair valued component parts which were not repairable in the past. Also because this additive manufacturing process can handle multiple materials simultaneously, it is used to produce part with functionally graded material. Some of the features of the laser metal deposition process are described in this chapter. Some experimental studies on the laser metal deposition of Titanium alloy- composite are also presented.


2021 ◽  
Author(s):  
Mohamed Belhadj ◽  
Sana Werda ◽  
Asma Belhadj ◽  
Robin Kromer ◽  
Philippe Darnis

Wire arc additive manufacturing process (WAAM) is an innovative technology that offers freedom in terms of designing functional parts, due to its ability to manufacture large and complex workpieces with a high rate of deposition. This technology is a metal AM process using an electric arc heat source. The parts manufactured are affected by thermal residual stresses due to high-energy input between wire and workpiece despite numerous advantages with this technology. It could cause severe deformation and change the global mechanical response. A 3D transient thermal model was created to evaluate the thermal gradients and fields during metal deposition. The material used in this study is a steel alloy (S355JR-AR). This numerical model takes into account the heat dissipation through the external environment and the heat loss through the cooling system under the base plate. Birth-element activation strategy was used to generate warm solid part following the movement of the heat source. The metal deposition is defined with constant welding speed. Goldak model was used to simulate the heat source in order to have a realistic heat flow distribution. Results were in concordance for thermal cycles at different points comparing with experimental results issued from bibliography in terms of: (1) Temperature maximum, (2) Thermal cycles and (3) Cooling gradient phase. This study enabled to check the numerical model and used as a predictive tool


2018 ◽  
Vol 30 (2) ◽  
pp. 022001 ◽  
Author(s):  
Felix Spranger ◽  
Benjamin Graf ◽  
Michael Schuch ◽  
Kai Hilgenberg ◽  
Michael Rethmeier

2019 ◽  
Vol 27 (2) ◽  
pp. 566-575 ◽  
Author(s):  
Patrick M. Sammons ◽  
Michelle L. Gegel ◽  
Douglas A. Bristow ◽  
Robert G. Landers

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