Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Analysis of Residual Stress Development in Open-Die Forged Axisymmetric Parts Using FEM

축대칭 형상 자유단조품의 잔류응력 형성에 대한 유한요소해석

  • 방원규 (포항공과대학교 항공재료연구센터) ;
  • 정재영 (포항산업과학연구원 재료공정연구센터) ;
  • 장영원 (포항공과대학교 항공재료연구센터)
  • Published : 2001.10.01
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Abstract

Residual stress in the forged parts affects the resistance to mechanical failure, dimensional uniformity, and the service life of the parts. In order to elucidate the development of residual stress in open-die forging process, elasto-plastic finite element analysis was implemented to radial forging process. Super duplex stainless steel SAF 2507 was selected as workpiece material and a series of mechanical tests followed by numerical compensation to deformation heating was conducted to obtain necessary flow data. The residual stress distributions were calculated using commercial 3-D FEM code and the effects of process design were evaluated from selected results.

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