소성∙가공 (Transactions of Materials Processing)

  • 제9권6호
  • /
  • Pages.653-662
  • /
  • 2000
  • /
  • 1225-696X(pISSN)
  • /
  • 2287-6359(eISSN)
한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
권호 표지

전체해석과 국부해석을 통한 Door Inner 스탬핑 공정에서 발생하는 주름의 효과적인 해석

An Efficient Analysis of Wrinkling in the Door Inner Stamping Process by Global Analysis and Subsequent Local Analysis

  • 김종봉 (LG전자 DA 연구소(창원)) ;
  • 김태정 (한국과학기술원 기계공학과) ;
  • 양동열 (한국과학기술원 기계공학과) ;
  • 유동진 (대진대학교 컴퓨터 응용 기계설계공학과)
  • 발행 : 2000.11.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Wrinkling is one of the major defects in sheet metal products together with tearing, springback and other geometric and surface defects. The initiation and growth of wrinkles are influenced by many factors such as stress ratios, mechanical properties of the sheet material, geometry of the workpiece, contact condition, etc. It is difficult to analyze the wrinkling initiation and growth considering all the factors because the effects of the factors are very complex and the wrinkling behavior may show a wide scatter of data even for small deviations of factors. The finite element analyses of the wrinkling initiation and growth in the sheet metal forming process provide the detailed information about the wrinkling behavior of sheet metal. The direct analyses of the wrinkling initiation and growth, however, bring about a little difficulty in complex industrial problems because it needs large memory size and long computation time. In the present study, therefore, a global-local analysis technique is introduced for the computational efficiency. Through the analysis of wrinkling in the door inner stamping process, the efficiency of the global-local analysis technique is investigated.

키워드

참고문헌

  1. Int. J. Mech. Sci. v.36 Rigid-plastic finite element anaylsis of sheet metal forming processes using continuous contact treatment and membrane element incorporation bending effect Yoo, D. J.;Song, I. S.;Yang, D. Y.;Lee, J. H.
  2. J. Plasticity v.16 The effect of plastic anisotropy on comprossive instability in sheet metal forming,Ⅰ. Kim, J. B.;Yang, D. Y.;Yoon, J. W.;Barlat, F.
  3. J. Jpn. Soc. Technol. Palst. v.25 Fracture mechanism and fracture control in deep drawing with hydraulic counter pressure. studies on hydraulic counter pressure forming Ⅰ- Nakamura, K.;Nakagawa, T.
  4. J. Mater. Process. Technol. v.28 An experimental investigation into the stamping of elastic-plastic circular plates Zhang, L. C.;Yu, T. X.
  5. J. Appl. Mech. v.25 Buckling of a thin annular plate under uniform compression Yamaki, N.
  6. Int. J. Mech. Sci. v.24 The buckling of annular plates in relation to the deep drawing process Yu, T. X.;Johnson, W.
  7. Int. J. Mech. Sci. v.30 Onset and growth of wrinkling in thin square plate subjected to diagonal tension Tomita, Y.;Shindo, A.
  8. Ⅰ. J. Plasticity v.9 Postbifurcation behavior of wrinkles in square metal sheet under Yoshida test Wang, X.;Lawrence H. N. Lee
  9. Int. J. Mech. Sci. v.42 Wrinking initiation and growth in modified Yoshida buckling test finite element analysis by using bifurcation algorithm and experimental comparison Kim, J. B.;Yang, D. Y;Yoon, J. W.
  10. Ph.D Thesis Continuum-based shell elements Stanley, G.
  11. Finite element procedures in engineering analysis Bathe, K. J.
  12. The finite element method: Linear static and dynamic finite element analysis Hughes, T. J. R.
  13. Comput. Meths. Appl. Mech. Engrg. v.1 A elasto-plastic finite element method based in incremental deformation theory and continuum based shell elements for planar anisotropic sheet materials Yoon, J. W.;Yang, D. Y;Chung, K.
  14. J. Mater. Process. Technol. v.83 The implementation of an equivalent drawbead model in a finite-element code for sheet metal forming Meinders, T.;Carleer, B. D.;Geijselaers, H. J. M.;Huetink, J.
  15. Proceedings of NUMISHEET'99 v.2 NUMISHEET99 Benchmark Specifications Gelin, J. C.;Picart, P.(eds.)
  16. Ph.D Thesis A Study on the Growth and Prediction of Wrinkles in Sheet Metal Forming Processes using Bifurcation Theory Kim, J. B.