Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Finite Element Analysis for Near-net-shape Forming of A16061 Powder under Warm Pressing

온간 성형 하에서 A1 합금 분말의 정밀정형에 대한 유한요소해석

  • 김종광 (포항공과대학교 대학원 기계공학과) ;
  • 양훈철 (포항공과대학교 대학원 기계공학과) ;
  • 김기태 (포항공과대학교 기계공학과)
  • Published : 2003.11.01
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Abstract

A finite element analysis for near-net-shape forming of A16061 powder was performed under warm rubber isostatic pressing and warm die pressing. The advantages of warm compaction by rubber isostatic pressing were discussed to obtain a part with better density distributions. The shape of rubber mold was designed by determining a cavity shape that provides a desired shape of the final powder compact. To simulate densification and deformed shape of a powder compact during pressing, the elastoplastic constitutive equation based on yield function of Shima-Oyane was implemented into a finite element program(ABAQUS). The hyperelastic constitutive equation based on the Ogden strain energy Potential was employed to analyze nonlinear elastic response of rubber. Finite element results were compared with experimental data for Al6061 powder compacts under warm die pressing and warm isostatic pressing.

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References

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