Finite Element Analysis of Powdered Magnet Sinter-Forging Processes Considering Deformable Body Contact

변형체 접촉을 고려한 분말자석 소결단조 성형공정의 유한요소 해석

  • 김승호 (한국과학기술원 기계공학과) ;
  • 허훈 (한국과학기술원 기계공학과)
  • Published : 2001.10.01

Abstract

Tube Process (TP) is a process to produce permanent magnets using a deformable tube for densification of magnet powder. This process claims that it can accomplish both densification and anisotropication in one step forming. This process is distinguished from other processes since it uses a deformable copper tube for densification of magnet powder. In this paper, simulation has been carried out for tile Tube Process in a closed die considering the compressibility of powdered material, arbitrary curved shape and deformable body contact between Nd-Fe-B magnet powder and a copper tube. Results show that the finite element analysis of the Tube Process plays an important role in the stage of preform design.

Keywords

References

  1. 한국소성가공학회지 v.8 no.2 원호형상을 가지는 분말자석 단조성형공정에서의 예비성형체 설계 김승호;이충호;허훈
  2. Int. J. Mech. Sci. v.14 A Plasticity Theory for Porous Solids Green, R. J.
  3. Int. J. Mech. Sci. v.18 Plasticity Theory for Porous Metals Shima, S.;Oyane, M.
  4. Int. J. Mech. Sci. v.26 A New Yield Function for Compressible P/M Materials Doraivelu, S. M.;Gegel, H. L.;Gunasekera, J. S.;Malas, J. C.;Morgan, J. T.;Thomas, Jr., J. F.
  5. J. Mater. Shaping Technol v.8 Plastic Deformation Behavior of Compressible Solids Seetharaman. V.;Doraivelu, S. M.;Gegel, H. L.
  6. Trans. ASME, J. of Eng. Mater. Technol v.95 Material Behavior in Powder Preform Forging Kuhn, H. A.;Downey, C. L.
  7. Int. J. Mech. Sci. v.24 Finite Element Method of Rigid-Plastic Analysis of Metal Forming Mori, K.
  8. Int. J. Numer. Methods Eng. v.30 Finite Element Simulation of Metal Powder Forming Chenot, J. L;Bay, F.;Fourment, L.
  9. Int. J. Numer. Methods Eng. v.30 Adaptive FEM Computation of Forming Process Application to Porous and Non-Porous Materials Zienkiewicz, O. C.;Huang, G. C.;Liu, Y. C.
  10. Metal forming and the finite element method Kobayashi, S.;Oh, S.I.;Altan, T.
  11. Bulletin of the JSME v.23 FEM for the Analysis of Plastic Deformation of Porous Metals Mori, K.;Shima, S.;Osakada, K.
  12. Proc. Verein Deutscher Ingenieure Explicit Integration Schemes and Contact Formulations for thin sheet forming Schweizehof, K.;Hallquist, J. Q.;T. Altan(et al.)
  13. Finite Element Procedures for Contact-Impact Problems Zhong, Z.H.