Thermo-Elasto-Plastic Finite Element Analysis of Powder Hot Forging

열간분말단조 공정의 열탄소성 유한요소해석

  • 김형섭 (충남대학교 금속공학과 및 급속응고신소재연구소)
  • Published : 1997.06.01

Abstract

A finite element analysis to solve the coupled thermomechanical problem in the plane strain upsetting of the porous metals was performed. The analysis was formulated using the yield function advanced by Lee and kim and developed using the thermo-elasto-plastic time integration procedure. The density and temperature dependent thermal and mechanical properties of porous metals were considered. The internal heat generation by the plastic deformation and the changing thermal boundary conditions corresponding to the geometry were incorporated in the program. The distributions of the stress, strain, pressure, density and temperature were predicted during the free resting period, deformation period and dwelling period of the forging process.

Keywords

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