소성∙가공 (Transactions of Materials Processing)

  • 제17권7호
  • /
  • Pages.511-516
  • /
  • 2008
  • /
  • 1225-696X(pISSN)
  • /
  • 2287-6359(eISSN)
한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
권호 표지
DOI QR코드

DOI QR Code

드로우비드력 측정용 실험금형

Experimental Drawbead Dies for Measuring Drawbead Forces

  • 문성준 (한양대학교 일반대학원, 자동차공학과) ;
  • 이명규 (한국기계연구원, 재료연구소) ;
  • 금영탁 (한양대학교 기계공학부)
  • 발행 : 2008.11.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

A drawbead die for the experimental determination of drawbead forces was newly introduced in this paper. While the conventional Nine's drawbead die inevitably includes effects of a blank holding force on the measured drawbead forces, the new drawbead die excludes it by removing the blank holder contact in the dieface. Therefore, the new drawbead die can provide more realistic drawbead forces without considering somewhat arbitrary effect of blank holder with the computational procedure of forming process. The drawbead opening force and restraining force obtained by adopting the two experimental dies were compared for the validation of accuracy in the FEM simulation of automotive fender forming process. The compared section strains and draw-ins confirmed that the present drawbead die provides better drawbead forces for an accurate FEM simulation of sheet metal forming process.

키워드

참고문헌

  1. H. D. Nine, 1978, Drawbead Forces in Sheet Metal Forming, Mechanics of Sheet Metal Forming, pp. 179-211
  2. H. D. Nine, 1982, New Drawbead Concepts for sheet Metal Forming, American Society for Metals, Vol. 2, pp. 185-192
  3. N. M. Wang, 1982, A Mathematical Model of Drawbead Forces in Sheet Metal Forming, J. of Applied Metal Working, Vol. 2, pp. 193-199 https://doi.org/10.1007/BF02834037
  4. B. S. Levy, 1983, Development of a Predictive Model for Draw Bead Restraining Force Utilizing Work of Nine and Wang, J. Applied Metal Working, Vol. 3, pp. 38-44 https://doi.org/10.1007/BF02833875
  5. N. Triantafyllidis, B. Maker, S. K. Samanta, 1986, An Analysis of Drawbead in Sheet Metal Forming: Part I - Problem Formulation, J. Eng. Mater. Tech., Vol. 108, pp. 321-327 https://doi.org/10.1115/1.3225889
  6. N. Triantafyllidis, G. Grab, B. Maker, S. K. Samanta, 1987, An Analysis of Drawbead in Sheet Metal Forming: Part II - Experimental Verification, J. Eng. Mater. Tech., Vol. 109, pp. 164-170 https://doi.org/10.1115/1.3225957
  7. T. B. Stoughton, 1988, Model of Drawbead Forces in Sheet Metal Forming, 15th IDDRG, pp. 205-215
  8. B. D. Carleer, T. Meingers, H. Huetink, 1996, Equivalent Drawbead Model in Finite Element Simu-lations, NUMISHEET '96, pp. 186-190
  9. Y. T. Keum, J. H. Kim, B. Y. Ghoo, 2001, Expert Drawbead Models for Finite Element Analysis of Sheet Metal Forming Processes, International Journal of Solids and Structures, Vol. 38, pp. 5335-5353 https://doi.org/10.1016/S0020-7683(00)00342-5

피인용 문헌

  1. Equivalent drawbead models for sheet forming simulation vol.16, pp.4, 2010, https://doi.org/10.1007/s12540-010-0812-2