한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제17권2호
  • /
  • Pages.193-200
  • /
  • 2000
  • /
  • 1225-9071(pISSN)
  • /
  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

블랭크 성형해석시 드로우비드 개수가 미치는 영향에 관한 연구

The Influence of the Number of Drawbead on Blank Forming Analysis

  • 정동원 (아주대학교 기계공학과) ;
  • 이상제 (아주대학교 기계공학과 대학원)
  • 발행 : 2000.02.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

In the sheet metal forming process, the drawbead is used to control the flow of material during the forming process. The drawbead provides proper restraining force to the material and prevents defects such as wrinkling or breakage. For these reasons, many studies for designing the effective drawbead have been conducted. In this paper, the influence of the number of drawbead during the blank forming process will be introduced. For the analysis, the numerical method called the static-explicit finite element method was used. The finite element analysis code for this method has been developed and applied to the drawbead process problems. It is expected that this static-explicit finite element method could overcome heavy computation time and convergence problem due to the increase of drawbeads.

키워드

참고문헌

  1. Nine, H.D., 'Drawbead Forces in Sheet Metal Forming,' Mechanics of Sheet Forming, Ed. by Koistinen, D. P. and Wang, N.-M., Plenum Press, pp. 179-211, 1978
  2. Wang, N.M. and Somaratna, N., 'Numerical Simulation of Industrial Sheet Forming Processes,' NUMIFORM'89, Colorado, pp. 75-84, 1989
  3. Wang, N.M and Shah, V.C., 'Drawbead Design and Performance,' J. Mater. Shaping. Tech., Vol. 9, pp. 21-26, 1991
  4. Cao, H.L. and Teodosiu, C., 'Numerical Simulation of Drawbeads for Axisymmetric Deep-drawing Processes,' NUMIFORM'92, pp. 439-448, 1992
  5. 이재우, 금영탁, '박판 성형공정의 유한요소해석을 위한 드로비드 전문모델 개발,' 한국소성가공학회지, 제7권, 제1호, pp. 3-22, 1998
  6. 박원배, 김창만, 김낙수, 서대교, 전기찬, '계단형 드로비드에 의한 판재의 인출특성에 관한 연구,' 한국소성가공학회지, 제5권, 제2호, pp. 130-137, 1996
  7. Kim, C.M., Im, Y.S., Heo, Y.M., Kim, N.S., Jung, G.C., Seo, D.G., 'Finite-element analysis and experimental verification for drawbead drawing processes,' J. of Materials Processing Technology, pp. 188-194, 1997 https://doi.org/10.1016/S0924-0136(97)00149-0
  8. Cheng, J.H., and Kikuchi, N., 'An Analysis of metal forming processes using large deformation elastic - plastic formulation,' Comp. Meth. Appl. Eng., pp. 71-108, 1985 https://doi.org/10.1016/0045-7825(85)90051-9
  9. Chun, B.K., 'Numerical Simulation of Bead Formation by an Elasto-Plastic Finite Element Method,' KAIST MS thesis, pp. 7-23 1992
  10. Yamada, Y., and Yoshimura, N., 'Plastic Stress-Strain Matrix and its Application for the Solution of Elastic-Plastic Problems by the Finite Element Method,' Int. J. Mech. Sci., Vol. 10, pp. 343-354, 1968 https://doi.org/10.1016/0020-7403(68)90001-5