Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Evaluation of Axial Residual Stress in Multi-Pass Drawn High Carbon Steel Wire Considering Effective Stress-Strain Curve at High Strain

고변형률 영역의 유효응력-변형률 곡선을 고려한 고탄소강 다단 신선 와이어 축방향 잔류응력 평가

  • Lee, Sang-Kon (PNU-IFAM JRC, Pusan National Univ.) ;
  • Kim, Dae-Woon (Graduate School of Precision Manufacturing System Division, Pusan National Univ.) ;
  • Kim, Byung-Min (School of Mechanical Engineering, Pusan National Univ.) ;
  • Jung, Jin-Young (Technical Development Institute, KISWIRE) ;
  • Ban, Duk-Young (Technical Development Institute, KISWIRE) ;
  • Lee, Seon-Bong (Faculty of Mechanical and Automotive Engineering, Keimyung University)
  • 이상곤 (부산대학교 부산대-IFAM 국제공동연구소) ;
  • 김대운 (부산대학교 대학원 정밀기계공학과) ;
  • 김병민 (부산대학교 기계공학부) ;
  • 정진영 (고려제강 기술개발연구원) ;
  • 반덕영 (고려제강 기술개발연구원) ;
  • 이선봉 (계명대학교 기계자동차공학과)
  • Received : 2010.01.25
  • Accepted : 2010.05.25
  • Published : 2010.08.01
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Abstract

The aim of this study is to evaluate the axial residual stress in multi-pass drawn high carbon steel wire by using FE analysis and XRD. When FE analysis is applied to evaluate the residual stress in drawn wire of multi-pass drawing process, obtaining the reliable effective stress-strain curve at high strain is very important. In this study, a model, which can express the reliable effective stress-strain curve at high strain, is introduced based on the Bridgman correction and tensile test for multi-pass drawn high carbon steel wires. By using the introduced model, FE analysis was carried out to evaluate the axial residual stress in the drawn wires. Finally, the effectiveness of the FE analysis with the introduced stress-strain relation was verified by the measurement of residual stress in the drawn wires through XRD. As a result, the evaluated residual stress of FE analysis shows good agreement with the measured residual stress.

Keywords

Acknowledgement

Supported by : 한국연구재단, (주)고려제강

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