Variation of optimal gas-supply condition along with deposition height in directed energy deposition

Shiho Takemura, Ryo Koike, Yasuhiro Kakinuma, Yohei Oda

研究成果: Conference contribution

抄録

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.

本文言語English
ホスト出版物のタイトル2nd International Conference on Simulation for Additive Manufacturing, Sim-AM 2019
編集者Ferdinando Auricchio, E. Rank, P. Steinmann, S. Kollmannsberger, Simone Morganti
出版社International Center for Numerical Methods in Engineering
ページ456-466
ページ数11
ISBN(電子版)9788494919480
出版ステータスPublished - 2019
イベント2nd International Conference on Simulation for Additive Manufacturing, Sim-AM 2019 - Pavia, Italy
継続期間: 2019 9 112019 9 13

出版物シリーズ

名前2nd International Conference on Simulation for Additive Manufacturing, Sim-AM 2019

Conference

Conference2nd International Conference on Simulation for Additive Manufacturing, Sim-AM 2019
国/地域Italy
CityPavia
Period19/9/1119/9/13

ASJC Scopus subject areas

  • 産業および生産工学

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