Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
권호 표지
DOI QR코드

DOI QR Code

Inverse Finite Element Analysis of Autobody Structures with a Direct Mesh Mapping Method for Crash Analysis Considering Forming Effets

직접격자 사상법을 이용한 차체 구조물의 유한요소 역해석 및 성형효과를 고려한 충돌해석

  • 김승호 (한국과학기술원 기계공학과) ;
  • 허훈 (한국과학기술원 기계공학과)
  • Published : 2002.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

A finite element inverse analysis is utilized to consider forming effects of an S-rail on the assessment of the crashworthiness with small amount of computation time. A crash analysis can be directly performed after the inverse simulation of a forming process without a smoothing or remeshing scheme. The direct mesh mapping method is used to calculate an initial guess from a sliding constraint surface that is extracted from the die and punch set. Analysis results demonstrate that energy absorption of structures is increased when simulation considers forming effects of thickness variation and work hardening. The finite element inverse analysis is proved to be an effective tool in consideration of forming effects for the crash analysis.

Keywords

References

  1. Sub, Y. S., Kim, Y. H. and Kim, S. W., 1996, 'Virtual Manufacturing Applications on the Integrated Structural Design of Sheet-Forming Products', NUMISHEET'96, pp. 144-150.
  2. Kellicut, A., Cowell, B., Kavikondala, K., Dutton, T., Tregbu, S. and Sturt, S., 1999, 'Application of the Results of Fanning Simulation in Crash Models,' proc. NUMISHEET'99, pp. 509-514.
  3. Mikami, H., Suzuki, H., Ishizawa, M. and Matsuoka, Y., 1999, 'Crash Simulations Considered Influence of Stamping:' proc. HANPAM99, pp. 189-200.
  4. Lee, S. H., Han, C. S., Oh, S. I. and Wriggers, P., 2001, 'Comparative crash simulations incorporating the results of sheet forming analyses', Engineering Computations, Vol. 18, pp. 744-758. https://doi.org/10.1108/EUM0000000005786
  5. Kim, K. P., Huh, H. and Kim, S. H., 2001, 'Collapse Analysis of an Auto-body Structure by a Finite Element Limit Method', proc. 6th USNCCM, pp. 35.
  6. Kang, W. J. and Huh, H., 2001, 'Crash Analysis of Auto-Body Structures Considering the Strain-Rate Hardening Effect', Int. J. Automotive Technology, Vol. 1, pp. 35-41. https://doi.org/10.1504/IJATM.2001.000025
  7. Lee, C. H. and Huh, H., 1997, 'Blank Design and Strain Prediction of Automobile Stamping Parts by an Inverse Finite Element Approach', J. Mater. Process. Technol., Vol. 63, pp.645-650. https://doi.org/10.1016/S0924-0136(96)02700-8
  8. Lee, C. H. and Huh, H., 1998, 'Three Dimensional Multi-step Inverse Analysis for the Optimum Blank Design in Sheet Metal Forming Processes', J. Mater. Process. Technol. Vol. 80-81, pp. 76-82. https://doi.org/10.1016/S0924-0136(98)00178-2
  9. 김승호, 김세호, 허 훈, 2001, '다단계 유한요소 역해석을 이용한 세장비가 큰 직사각컵 성형 공정의 해석', 한국소성가공학회지, Vol. 10, No.2, pp.389-395.
  10. Kim, S. H., Kim, S. H. and Huh, H., 2001, 'Finite Element Inverse Analysis for Design of Intermediate Dies in Multi-stage Deep-drawing Processes with Large Aspect Ratio', J. Mater. Process. Technol., Vol. 113, pp. 779-785. https://doi.org/10.1016/S0924-0136(01)00660-4
  11. Sowerby. R., Duncan, J. L. and Chu. E., 1986, 'The Modelling of Sheet Metal Stamping', Int. J. Mech. Sci., Vol. 28, pp. 415-430. https://doi.org/10.1016/0020-7403(86)90062-7

Cited by

  1. A Study on the Generation of Initial Shape for the Initiation of Optimal Blank Design Sequence vol.13, pp.1, 2004, https://doi.org/10.5228/KSPP.2004.13.1.090