Improvement of Discrete Element Simulation Accuracy of Steel Powder Filling Behavior by Optimization of Contact and Friction Parameters

• Yashiro Naoki

  Graduate School of Simulation Studies, University of Hyogo Advanced Technology R&D Center, NTN Corporation

• Oohira Kouya

  Advanced Technology R&D Center, NTN Corporation

• Sugimura Natsuko

  Graduate School of Simulation Studies, University of Hyogo

• Washizu Hitoshi

  Graduate School of Simulation Studies, University of Hyogo Elements Strategy Initiative for Catalysts and Batteries (ESICB)

抄録

The filling behavior of Fe-Ni-Mo steel powder for sintered machine parts is simulated using our original DEM (Discrete Element Method) code based on FDPS (Framework for Developing Particle Simulator). The difference between the simulated and experimental apparent densities after self-weight filling is only -6.7%, which is a significantly higher prediction accuracy than the prior study. This result is obtained by only calculating the repulsive force, viscous damping, friction force and gravity using the actual Young's modulus. This is due to using the experimental friction coefficients and the upper limit setting of the distance between the particle surfaces based on the experimental study. This method can be used to simulate the porosity, especially the low density region, in the actual filling process.

収録刊行物

• Tribology Online

  Tribology Online 16 (1), 16-23, 2021-01-31

  一般社団法人 日本トライボロジー学会

キーワード

• steel powder
• filling behavior
• Hertzian contact
• friction characteristics
• Discrete Element Method (DEM)
• apparent density

詳細情報

• CRID: 1390568456356992512
• NII論文ID: 130007978438
• DOI: 10.2474/trol.16.16
• ISSN: 18812198
• ISSN: 1881218X
• Web Site: https://www.jstage.jst.go.jp/article/trol/16/1/16_16/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可