This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Estimation of the Initial Blank Shape and Strain Distribution for Complicated Geometries in Sheet Metal Forming by a Nonlinear Inverse Finite Element Method
Technical Paper
2012-01-0019
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
A nonlinear inverse finite element method is developed for estimation of initial blank shape and strain distribution in final shape. This method often based on implicit static algorithms, causes sometimes convergence problems because of strong nonlinearities. In order to avoid the converging problems, especially in the quasi vertical walls, an appropriate initial guess is introduced. By using this initial guess, the number of iterations in the nonlinear numerical solution is decreased, solution speed is significantly increased and complicated geometries can be analyzed by this method with good accuracy. Application to a Srail part shows good agreement between commercially available finite element software and IFEM results.
Recommended Content
Citation
Farahani, M. and Assempour, A., "Estimation of the Initial Blank Shape and Strain Distribution for Complicated Geometries in Sheet Metal Forming by a Nonlinear Inverse Finite Element Method," SAE Technical Paper 2012-01-0019, 2012, https://doi.org/10.4271/2012-01-0019.Also In
References
- Karima, M. ASME trans. J. of Engineering for Industry 111 1989 345
- Chen, X. Sowerby, R. Int. J. Mech. Sci. 34 1992 159
- Sowerby, R. Duncan, J.L. Chu, E. Int. J. Mech. Sci. 28 1986 415
- Majlessi, S.A. Lee D. “Deep drawing of square-shaped, sheet metal parts Part1. FEM” Transaction of ASME 1993 115 102 9
- Majlessi, S.A Lee D. “Development of multistage sheet metal forming analysis method” J. Mat. Shaping Tech 1988 6 41 54
- Guo, Y. Q. Batoz, J. L. Detraux, J. M. Duroux, P. “Finite element procedures for strain estimations of sheet metal forming parts” Int. J. numerical methods in engineering 1990 30 1385 1401
- Batoz, J.L. Guo, Y. Mercier, F. “The inverse approach with simple triangular shell elements for large strain predictions of sheet metal forming parts” Engineering Computations 1998 15 864 892
- Guo, Y. Batoz, JL. et al “Recent developments on the analysis and optimum design of sheet metal forming parts using a simplified inverse approach” Computers and Structures 2000 78 133 48
- Naceur, H. Delaméziere, A. Batoz, J.L. Guo, Y.Q. Knopf-Lenoir, C. “Some improvements on the optimum process design in deep drawing using the inverse approach” Journal of Materials Processing Technology 2004 146 250 62
- Liu, SD. Karima, M. “A one step finite element approach for production design of sheet metal stamping.” Chenot, JL Wood, RD Zienkiewicz, OC NUMIFORM 92, Valbonne, France Rotterdam A.A. Balkema 1992 497 502
- Azizi, R. Assempur, A. “Application of linear inverse finite element method in prediction of the optimum blank in sheet metal forming” Journal of Materials and Design 2008 29 1965 72
- Azizi, R. “Different implementations of inverse finite element method in sheet metal forming” J. Materials and design 2009 30 2975 80
- Lai, W.Michael Rubin, David Krempl, Erhard “Introduction to Continuum Mechanics” Oxford Pergamon Press 1942
- Farahani, M. Kankarani Shirin, M. Bostan Assempour, A. “Development of an Inverse Finite Element method with an initial guess of linear unfolding” Journal of Archive of Applied Mechanics