Journal of the Korean Society for Railway (한국철도학회논문집)

The Korean Society for Railway (한국철도학회)
권호 표지

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
Download PDF
⟨ Previous Next ⟩

Abstract

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.

Keywords

References

  1. 최석환, '반복하중을 받는 철근 콘크리트 요소,' 번역기사, 전산구조공학, 제 11권, 제 2호,' 1998
  2. 태연기계(주), '한국 철근 가공의 현주소', 1998
  3. Concept91, MEP SYSTEM, OPERATION AND MAINTENANCE MANUAL
  4. G. Schleinzer and F. D. Fischer, 'Residual stress formation during the roller straightening of railway rails," International Journal of Mechanical Sciences 43, pp 2281-2295, 2001 https://doi.org/10.1016/S0020-7403(01)00041-8
  5. B. J. Wu, L. C. Chan, T. C. Lee and L. W. Ao, 'A study on the precision modeling of the bars produced in two cross - roll straightening," Journal of Materials Processing Technology 99, pp 202-206, 2000 https://doi.org/10.1016/S0924-0136(99)00421-5
  6. M. Nastran and K. Kuzman, 'Stabilisation of mechanical properties of the wire by roller straightening,' Journal of Materials Processing Technology 5984, pp 1-9, 2002
  7. Takeshi Uemori, Tatsuo Okada and Fusahito Yoshida, 'Simulation of Springback in V-bending Process by Elasto - Plastic Finite Element Method with Consideration of Bauschinger Effect,' METALS AND MATERIALS, Vol. 4, No. 3, pp 311-314, 1998
  8. Zhong Hu, 'Elasto-plastic solutions for spring - back angle of pipe bending using local induction heating,' Journal of Materials Processing Technology 102, pp 103-108, 2000 https://doi.org/10.1016/S0924-0136(00)00443-X
  9. 김홍건, '단섬유 금속복합체에서의 소성역 전개과정 및 바우신저 효과에 관한 연구,' 한국공작기계학회지, 제7권, 제1호, pp 22-32, 1998
  10. K.T. Kim and Y.S. Kwon, 'Elastic-Plastic Response of Sintered Porous Iron under Uniaxial Strain Cycling,' 대한기계학회논문집, 제15권, 제4호, pp 1204-1214, 1991
  11. 강명순,'소성가공학, 신성문화사, 1975.
  12. 金東垣, 塑性學, 淸文閣, 1998.
  13. 이종국, 이병영, 유승원, 이중기, 소성가공, 원창출판사,' 1998
  14. (주)태성에스엔이, 비선형 해석 with ANSYS 5.5, 2002