An evaluation of load of the steel bar straightener using plastic moment

소성모멘트를 이용한 철근 직선화 장치의 하중 분석

  • 이동호 (부산대학교 기계설계공학과 대학원) ;
  • 박수진 (부산대학교 기계설계공학과 대학) ;
  • 손정현 (부산대학교 기계기술연구) ;
  • 유완석 (부산대학교 기계설계공학과)
  • Published : 2002.09.01


In this paper, the straightening process of a steel bar straightener is studied. The straightener carries out the bending and reverse bending process repeatedly. Plastic theory is employed for the analysis of roller-supporting-load, and the residual stress and the axial load of a steel bar are calculated by using the bending moment. The Bauschinger effect and plastic moment are calculated by using the residual stress and Swift's method respectively. It is verified from the experiments that the displacement calculated from theory makes it possible to straighten a steel bar.


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