This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Using a Geometric Toolkit to Link Finite Element Calculations in Sheet Metal Forming Analysis
Annotation ability available
Sector:
Language:
English
Abstract
Sheet metal forming of automobile body panel consists of two processes performed in series: binder forming and punch forming. Due to differences in deformation characteristics of the two forming processes, their analysis methods are different. The binder wrap surface shape and formed part shape are calculated using different mathematical models and different finite element codes, e.g., WRAPFORM and PANELFORM, respectively.
The output of the binder forming analysis may not be directly applicable to the subsequent punch forming analysis. Interpolation, or approximation, of the calculated binder wrap surface geometry is needed. This surface representation requirement is carried out using computer aided geometric design tools. This paper discusses the use of such a tool, SURFPLAN, to link WRAPFORM and PANELFORM calculations. By SURFPLAN, an interpolated Bezier surface and an approximated C1 smooth Bezier surface are obtained based on the WRAPFORM calculated node points on the binder wrap surface. The approximated binder wrap surface geometry is used in punch forming analysis by PANELFORM. Two examples are presented.
Recommended Content
Citation
Chen, K. and Campbell, M., "Using a Geometric Toolkit to Link Finite Element Calculations in Sheet Metal Forming Analysis," SAE Technical Paper 940748, 1994, https://doi.org/10.4271/940748.Also In
References
- Aita, S. Khaldi, F. E. Fontaine, L Tamada, T Tamura, E. 1992 ‘Numerical simulation of a stretch drawn autobody: Part I and II,’ SAE papers No. 920639 and 920640 SAE SP-897
- Arlinghaus, F. J. Frey, W. H. Stoughton, T. B. Murthy, B. K. 1985 ‘Finite element modeling of a stretch formed part,’ 51 64 Computer Modeling of Sheet Metal Forming Process 12th Automotive Materials Symposium The Metallurgical Society
- Chen, K. K. 1986 ‘An iteration method for binder wrap calculations,’ Mattiasson K. et al. Proceedings of the NUMIFORM'86 Conference Gothenburg 321 326 Balkema, Rotterdam
- Chen, K. K. 1988 ‘A binder wrap calculation procedure for sheet metal formability analysis,’ Kiefer B. F. et al. Materials in Manufacturing Processes ASME Book 8 1 8 American Society of Mechanical Engineers
- Chen, K. K. Rechenbach, W. S. Vadhavkar, A. V. Assiff, T. C. 1988 ‘A binder wrap evaluation method for a class of sheet metal forming dies,’ Chryssolouris G. Komanduri R. Symposium on Product and Process Design 1 ASME Book No. H00412 181 188 American Society of Mechanical Engineers
- Chen, K. K. Waugh, T. G. 1990 ‘Application of a binder wrap calculation model to layout of autobody sheet metal forming dies,’ SAE paper #930514 SAE SP-825 and SAE Transactions
- Chen, K. K. Deshpande, A. 1992 ‘A preliminary evaluation of DYNA3D for binder wrap forming calculations,’ 69 83 Computer Applications in Shaping & Forming Materials Demeri M. Y. The Minerals, Metals & Materials Society
- Chen, K. K. Baran, D. F. 1993 ‘Bifurcation in binder wrap forming,’ SAE Paper No. 930514 SAE SP-944
- Faux, I. D. Pratt, M. J. 1979 Computational Geometry for Design and Manufacture Wiley New York
- Liu, S. D. Karima, M. 1992 ‘On a one step finite element approach for a closer interface between product design and Manufacturing feasibility,’ SAE Paper # 920638 SAE Special Publication SP-897
- Sarraga, R. F. 1990 ‘Computer modeling of surfaces with arbitrary shapes,’ General Motors Research Publication GMR- 6388 67 77 IEEE Computer Graphics and Applications 10 2
- Schweizerhof, K. Weimar, K. Hallquist, J. O. Stillman, D. W. 1991 ‘Improving standard shell elements, friction models and contact algorithm for the efficient solution of sheet metal forming problems with LS-DYNA3D,’ VDI Berichte 894 FE-Simulation of 3-D sheet metal forming processes in automotive industry
- Stevenson, R. 1988 ‘Development in the design and analysis of sheet metal stamping dies,’ Product and Process Design ASME book H00412 173 179
- Stoughton, T. B. 1985 ‘Finite element modeling of 1008 AK steel stretched over a rectangular punch with bending effects,’ 143 159 Computer Modeling of Sheet Metal Forming Process 12th Automotive Materials Symposium The Metallurgical Society
- Stoughton, T. B. Arlinghaus, F. J. 1989 ‘Sheet metal forming simulation using finite elements,’ GM Research Publication GMR-6742
- Stoughton, T. B. 1993
- Tang, S. C. 1985 ‘Verification and application of a binder wrap analysis,’ Computer Modeling of Sheet Metal Forming Process Wang N. M. Tang S. C. The Metallurgical Society
- Tang, S. C. 1993 ‘Quasi-static analysis of sheet metal forming processes,’ 53 67 Computer Applications in Shaping & Forming Materials Demeri M. Y. The Minerals, Metals & Materials Society
- Wang, N. M. Budiansky, B. 1978 ‘Analysis of sheet metal stamping by a finite element method,’ J. Applied Mechanics 45 73 82
- Wang, N. M. Wenner, M. L. 1978 ‘Elastic-viscoplastic analyses of simple stretch forming problems,’ 378 402 Mechanics of sheet metal forming Koistinen D. P. Wang N. M. Plenum Press