Etude et optimisation des parametres du procede pour le controle du retour elastique de pieces embouties
Keywords:
optimisation, sensitivity analysis, deep drawing, springbackAbstract
A numerical technique for the control of springback effects is proposed in this paper. This technique is based on the combination of an optimisat ion algorithm and a finit e element method. The optimization algorithm is based on a gradient method containing a sensitivity analysis and allows the optimization of the process parameters in order to obtain a final product with the desired shape. Numetical examples are presented to illustrate the efficiency of the proposed approach.
Downloads
References
[MAR 92] MARCINIAK Z., DUNCAN J., Mechanics of Sheet-Metal Fanning, Edward
Arnold Pub!., 1992.
[GAR 58] GARDINER, F.J., The springback of metals, Trans. ASME 79, 1958.
[TAN 87] TANG, S.C., Analysis of springback in sheet forming operation, Advanced
Teclmology of Plasticity, 1, pp. 93-197, 1987.
[BOI 90] BOIVIN M., Prevision du retour elastique lors du pliage des toles, dans Physique
et Mecanique de La Mise en Fonne des Metaux, Presses du CNRS, 471-480, 1990.
[GEL 95] GELIN, J.C., BOULMANE, L., BOISSE, P., Quasi-static implicit transient analyses
of sheet metal forming using a C0 three node shell element, J. Mater. Processing Technology,
vol. 50, n° 1-4,54-69, 1995.
[HIL 50] HILL R., Thermomechanical Theory of Plasticity, Oxford University Press, 1950.
[BOU 96] BOUBAKAR. L, Boulmane, L, Gelin, J.C., Finite element modelling of the
stamping of ani sotropic sheet metals, Engineering Computations, vol. 13, pp. 143- 171, 1996.
[JOA 95] JOANNIC, D, GELIN, J.C., Accurate simul ation of springback in 3D sheet metal
forming processes, 5th Int. Conf on Numerical Methods in Industrial Forming Processes -
Numifoml'95, Ed. by S.F. Shen and P.R. Dawson, A.A. Balkema Publ., 729-735, 1995.
[KEG 95] KEGL, M, BUTINAR, B.J., OBLAK, M.M., "Shape optimal design of elastic
planar frames with non-linear response". Int. J. Numer. Methods. Eng., vol. 38, 3227-3242,
(1995).
[SCH 94] SCHRAMM, 0 ., PILKEY, W. D., "Optimal shape design for thin-walled beam
cross-sections", Int. J. N!.1mer. Methods. Eng., vol. 37,4039-4058, (1994).
[GHO 96] GHOUATI, 0 ., GELIN, J.C., "Sensitivity analysis and optimization of shape and
process parameters in metal forming", Engineering Systems Design and Analysis Conference
, vol. 3, pp. 221-226.
[GEL 96] GELJN, J.C., GHOUATI, 0.: An Inverse Solution Procedure For Material
Parameters Identification In Large Plastic Deformations, Comm. in Num. Meth. in Eng. 12
(1996), 161 - 173.
[Mak 93] MAKINOUCHI, A, NAKAMACHI, E, Numisheet'93, Numerical methods for sheet
metal forming, Tokyo, Japan, 1993.
