TY - GEN
T1 - Variation of optimal gas-supply condition along with deposition height in directed energy deposition
AU - Takemura, Shiho
AU - Koike, Ryo
AU - Kakinuma, Yasuhiro
AU - Oda, Yohei
N1 - Publisher Copyright:
Copyright © COMPLAS 2019.
PY - 2019
Y1 - 2019
N2 - Summary. Directed energy deposition (DED), which is one of additive manufacturing applicable to metals, laminates the material on a baseplate by melting and solidifying with a high-power heat source. In terms of powder-based DED, the material waste tends to be large because powder flow is difficult to converge on the melt pool precisely. This study evaluates the variation in powder distribution when the deposition height is changed in order to obtain the optimal gas-flow rate and powder-nozzle shape. The powder flow is estimated with a computational fluid dynamics simulation based on Euler-Lagrange approach. The simulation results indicate that the proposed nozzles can achieve the high powder convergence stably even if the total amount of gas supply is reduced.
AB - Summary. Directed energy deposition (DED), which is one of additive manufacturing applicable to metals, laminates the material on a baseplate by melting and solidifying with a high-power heat source. In terms of powder-based DED, the material waste tends to be large because powder flow is difficult to converge on the melt pool precisely. This study evaluates the variation in powder distribution when the deposition height is changed in order to obtain the optimal gas-flow rate and powder-nozzle shape. The powder flow is estimated with a computational fluid dynamics simulation based on Euler-Lagrange approach. The simulation results indicate that the proposed nozzles can achieve the high powder convergence stably even if the total amount of gas supply is reduced.
KW - Computational Fluid Dynamics
KW - Directed Energy Deposition
KW - Inconel 625
KW - Multiphase-flow Simulation
UR - http://www.scopus.com/inward/record.url?scp=85102045513&partnerID=8YFLogxK
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M3 - Conference contribution
AN - SCOPUS:85102045513
T3 - 2nd International Conference on Simulation for Additive Manufacturing, Sim-AM 2019
SP - 456
EP - 466
BT - 2nd International Conference on Simulation for Additive Manufacturing, Sim-AM 2019
A2 - Auricchio, Ferdinando
A2 - Rank, E.
A2 - Steinmann, P.
A2 - Kollmannsberger, S.
A2 - Morganti, Simone
PB - International Center for Numerical Methods in Engineering
T2 - 2nd International Conference on Simulation for Additive Manufacturing, Sim-AM 2019
Y2 - 11 September 2019 through 13 September 2019
ER -