R. Bahloul, S. Ben-elechi, and A. , Potiron Optimisation of springback predicted by experimental and numerical approach by using response surface methodology, International Journal of Materials Processing Technology

R. Bahloul, S. B. Eléchi, P. Santo, H. Naceur, and A. , Potiron Optimisation of bending process by means of response surface and moving least squares methods, Far East Journal of Applied Mathematics, vol.22, issue.1, pp.25-54, 2006.

A. Mkaddem, R. Bahloul, P. Santo, and A. , Potiron Experimental characterisation in sheet forming processes by using Vickers micro hardness technique, Journal of Materials Processing Technology, p.1609

R. Bahloul and A. , Potiron Optimisation de forme de pièces de sécurité à l'aide de plans d'expériences et surfaces de réponse, 1 st International Congress Design and Modelling of Mechanical Systems, p.98, 2005.

R. Bahloul, P. Santo, A. Mkaddem, and A. , Potiron Optimisation of springback predicted by experimental and numerical approach by using response surface methodology, Proceedings of International Conference of Sheet Metal 2005, pp.573-760

R. Bahloul, P. Santo, and A. , Potiron Optimisation of process parameters in wiping die bending operation in order to minimise of stresses and Lemaitre's damage, International conference on material forming ESAFORM, pp.159-162, 2005.

R. Bahloul, A. Mkaddem, P. Santo, and A. , Potiron Sheet metal bending optimisation using response surface method, numerical simulation and design of experiments, Congress of materials and manufacturing engineering and technology COMMENT, p.134, 2005.

R. Bahloul and P. , Dal Santo Optimisation of process parameters for the minimisation of stress field and bending load in sheet metal bending operation, International conference on innovations in deep drawing IDDRG 2005, pp.1-10

R. Bahloul, S. B. Eléchi, P. Santo, and A. , Potiron Optimisation of the L-bending process: A comparison between Response Surface, Moving Least Squares and Evolution Strategies Methods, Proceedings of the first invited COST 526 conference on Automatic Process Optimization in Materials Technology 2005, pp.120-131

A. Mkaddem, R. Bahloul, A. Potiron, and P. , Dal Santo Experimental and numerical investigation in sheet bending processes using Response Surface Methodology, Congress of materials and manufacturing engineering and technology COMMENT, p.156, 2005.

A. Mkaddem, R. Bahloul, and A. , Potiron Numerical analysis and response surface method to investigate friction effects in sheet bending application, International conference on material forming ESAFORM 2005, pp.261-264

A. Abdali, K. Benkrid, and P. Bussy, Numerical simulation of sheet cutting, Références bibliographiques Proceedings NUMIFORM 95, pp.807-813, 1995.

K. R. Alam, T. J. Mcnaught, and . Ringrose, A comparison of exprimental designs in the development of a neural network simulation metamodel. Simulation Modelling Practice and Theory, pp.559-578, 2004.

U. P. Anokye-siribor, P. Singh, and . Agahi, Determination of spring back in air bending using parabolic model, Proceeding of the 8 th International Conference on Sheet Metal, pp.0-95276, 2000.

R. Bahloul, P. Santo, and A. Potiron, Shape Optimisation of Automotive Security-parts Regarding the Influence of Residual Stresses and Material Damage, 4th European Congress on Computational Methods in Applied Sciences and Engineering, Finland, p.490, 2004.

. Bah-04a-]-r, P. Bahloul, A. Santo, and . Potiron, Influence de la forme des attaches de sécurité sur leur comportement en service. Mécanique & Industrie (Accepté avec correction _ Reference, 2004.

R. Bahloul, S. B. Eléchi, P. Santo, and A. Potiron, Optimisation of the Lbending process: A comparison between Response Surface, Moving Least Squares and Evolution Strategies Methods, Proceedings of the first invited COST 526 conference on Automatic Process Optimization in Materials Technology, Morschach ? Switzerland, pp.120-131, 2005.

R. Bahloul, P. Santo, A. Mkaddem, and A. Potiron, Optimisation of springback predicted by experimental and numerical approach by using response surface methodology, Proceedings of International Conference of Sheet Metal, pp.573-760, 2005.

R. Bahloul, P. Santo, and A. Potiron, Optimisation of process parameters in wiping die bending operation in order to minimise of stresses and Lemaitre's damage. International conference on material forming ESAFORM, pp.159-162, 2005.

. Bah-05d-]-r, P. Bahloul, and . Santo, Optimisation of process parameters for the minimisation of stress field and bending load in sheet metal bending operation, International conference on innovations in deep drawing IDDRG, 2005.

. Bah-05e-]-r, ;. Bahloul, and . Eléchi, Dal Santo; H. Naceur; A. Potiron. Optimisation of bending process by means of response surface and moving least squares methods, Far East Journal of Applied Mathematics, vol.22, issue.1, pp.25-54, 2006.

R. Bahloul, P. Santo, and A. Potiron, Optimisation de forme de pièces de sécurité à l'aide de plans d'expériences et surfaces de réponse. First International Congress Design and Modelling of Mechanical Systems, p.98, 2005.

R. Bahloul, A. Mkaddem, P. Santo, and A. , Potiron Sheet metal bending optimisation using response surface method, numerical simulation and design of experiments. Congress of materials and manufacturing engineering and technology COMMENT, p.134, 2005.

S. and B. Elechi, Analyse et conception rapides de paramètres du procédé d'emboutissage pour le contrôle du retour élastique, Thèse de doctorat, pp.13-2004

A. G. Benyounis, M. S. Olabi, and . Hashmi, Optimizing the laser-welded butt joints of medium carbon steel using RSM, Journal of Materials Processing Technology, vol.164, issue.165, pp.164-165, 2005.
DOI : 10.1016/j.jmatprotec.2005.02.067

A. J. Booker, A. R. Conn, J. E. Dennis, P. D. Frank, M. Trosset et al., Global modeling for optimization, Boeing/IBMRice Collabrative Project, 1995.

P. Breitkopf, A. Rassineux, P. Villon, K. Saannouni, and H. Cherouat, Meshfree operators for consistents field transfert in large deformation plasticity, Proceedings of ECCOMAS-ECCM-2001, 2001.

P. Breitkopf, H. Naceur, A. Rassineux, and P. Villon, Moving least squares response surface approximation: Formulation and metal forming applications, Computers & Structures, vol.83, issue.17-18, pp.1411-1428, 2005.
DOI : 10.1016/j.compstruc.2004.07.011

L. Bui, J. P. Papeleux, and . Ponthot, Numerical simulation of springback using enhanced assumed strain elements, Journal of Materials Processing Technology, vol.153, issue.154, pp.153-154, 2004.
DOI : 10.1016/j.jmatprotec.2004.04.342

S. Costa, J. L. Giurgea, and Y. Coulomb, Application of Experimental Design Method in the Screening of Electromagnetic Devices Parameters, 2000.

M. Cervenka, B. Bouchet, and C. Gasc, Influence du mode de découpe sur le comportement en fatigue de tôles minces d'aciers dual-phase. Mémoires d'études scientifiques, pp.233-247, 1990.

J. Chaboche, Continuous damage mechanics ??? A tool to describe phenomena before crack initiation, Nuclear Engineering and Design, vol.64, issue.2, 1981.
DOI : 10.1016/0029-5493(81)90007-8

F. K. Chen and P. C. Tszeng, A study of sidewall curl in sheet metal forming processes, Proceeding of the 8 th International Conference on Sheet Metal, pp.0-95276, 2000.

P. J. Chen and S. C. Lin, Using neural networks to predict bending angle of sheet metal formed by laser, International Journal of Machine Tools and Manufacture, vol.40, issue.8, pp.1185-1197, 2000.
DOI : 10.1016/S0890-6955(99)00111-X

I. , N. Chou, . Ch, and . Hung, Finite element analysis and optimization of springback reduction, International Journal of Machine Tools & Manufacture, vol.39, pp.517-536, 1999.

. S. Chu-98-]-j, S. M. Chung, and . Hwang, Application of a genetic algorithm to process optimal design in non-isothermal metal forming, Journal of Materials Processing Technology, pp.80-81, 1998.

A. H. Clausen, O. S. Hopperstad, and M. Langseth, Sensitivity of model parameters in stretch bending of aluminium extrusions, International Journal of Mechanical Sciences, vol.43, issue.2, pp.427-453, 2001.
DOI : 10.1016/S0020-7403(00)00012-6

D. Cohn, Neural Network Exploration Using Optimal Experiment Design, Neural Networks, vol.9, issue.6, 2001.
DOI : 10.1016/0893-6080(95)00137-9

A. Delamézière, H. Naceur, P. Breitkopf, C. Knof-lenoir, J. L. Batoz et al., Faisabilit?? en emboutissage : optimisation du mat??riau par surface de??r??ponseFeasibility in deep drawing: optimization of material properties using response surface, M??canique & Industries, vol.3, issue.2, pp.93-98, 2002.
DOI : 10.1016/S1296-2139(02)01144-2

V. Esat, H. Darendeliler, and M. I. Gokler, Finite element analysis of springback in bending of aluminium sheets, Materials & Design, vol.23, issue.2, pp.223-229, 2002.
DOI : 10.1016/S0261-3069(01)00062-0

K. J. Fann and P. Y. Hsiao, Optimization of loading conditions for tube hydroforming, Journal of Materials Processing Technology, vol.140, issue.1-3, pp.1-3, 2003.
DOI : 10.1016/S0924-0136(03)00778-7

S. Fujikawa and K. Ishii, Diagnostic expert systems for defects in forged parts, Journal of Intelligent Manufacturing, vol.6, issue.3, pp.163-173, 1995.
DOI : 10.1007/BF00171445

A. Ghosh, P. B. Popat, and V. Raghu, A new approach to the mechanics of the blanking operation: Theoretical model and experimental verification, Journal of Mechanical Working Technology, vol.11, issue.2, pp.215-228, 1985.
DOI : 10.1016/0378-3804(85)90026-9

]. J. Gou-99 and . Goupy, Plan d'expériences pour surface de réponse, 1999.

S. G. Gilmour and R. Mead, A Bayesian design criterion for locating the optimum point on a response surface, Statistics & Probability Letters, vol.64, issue.3, pp.235-242, 2003.
DOI : 10.1016/S0167-7152(03)00154-8

N. S. Hadi, Neural networks applications in concrete structures, Computers & Structures, vol.81, issue.6, pp.373-381, 2003.
DOI : 10.1016/S0045-7949(02)00451-0

R. Hambli, A. Potiron, S. Boude, and M. Reszka, Sheet metal blanking simulation with ABAQUS. ABAQUS User's Conference, pp.409-417, 1995.

R. Hambli, Etude expérimentale, numérique et théorique du découpage des tôles en vue de l'optimisation du procédé, Thèse de doctorat ENSAM Angers, 1996.

R. Hambli, Finite element model fracture prediction during sheet-metal blanking processes, Engineering Fracture Mechanics, vol.68, issue.3, pp.365-378, 2000.
DOI : 10.1016/S0013-7944(00)00106-5

. Ham-01a-]-r and . Hambli, Comparison between Lemaitre and Gurson damage models in crack growth simulation during blanking process, International Journal of Mechanical Sciences, vol.43, issue.12, pp.2769-2790, 2001.

R. Hambli, A. Potiron, and A. Kobi, Application of design of experiment technique for metal blanking processes optimization, M??canique & Industries, vol.4, issue.3, pp.175-180, 2003.
DOI : 10.1016/S1296-2139(03)00035-6

. Ham-03a-]-r, F. Hambli, and . Guerin, Application of neural network for optimum clearance prediction in sheet metal blanking processes, Finite Elements in Analysis and Design, vol.39, pp.1039-1052, 2003.

A. Hansen and . Ostermeier, Completely Derandomized Self-Adaptation in Evolution Strategies, Evolutionary Computation, vol.9, issue.2, pp.159-195, 2001.
DOI : 10.1016/0004-3702(95)00124-7

S. D. Hansen, P. Müller, and . Koumoutsakos, Reducing the Time Complexity of the Derandomized Evolution Strategy with Covariance Matrix Adaptation (CMA-ES), Evolutionary Computation, vol.11, issue.1, pp.1-18, 2003.
DOI : 10.1162/106365601750190398

R. L. Hardy, Multiquadratic equations of topography and other irregular surfaces, Journal of Geophysical Research, vol.76, 1905.

I. Hartley, C. Pillinger, and . Sturgess, Numerical modeling of material deformation process resarch, developpement and applications, 1992.

. Hibbit, . Karlsson, and I. Sorensen, Contact and interaction modelling. ABAQUS/ STANDARD User's Manual, U.S.A, version 6, 2001.

R. Hino, Y. Goto, and M. Shiraishi, Spring back of sheet metal laminates subjected to stretch bending and the subsequent unbending, Proceedings of the 6 th International conference on Technology of Plasticity, pp.3-540, 1999.

H. S. Hyun and . Cho, Prediction of forming pressure curve for hydroforming processes using artificial neural network, Proceedings of the institution of Mechanical Engineers. Part I, pp.109-121, 1994.
DOI : 10.1243/PIME_PROC_1994_208_315_02

M. V. Inamdar, P. Date, and S. V. Sabnis, On the effects of geometric parameters on springback in sheets of five materials subjected to air vee bending, Proceeding of the 8 th International Conference on Sheet Metal, pp.0-95276, 2000.
DOI : 10.1016/S0924-0136(02)00136-X

P. Inamdar, U. B. Date, and . Desai, Studies on the prediction of springback in air vee bending of metallic sheets using an artificial neural network, Journal of Materials Processing Technology, vol.108, issue.1, pp.45-54, 2000.
DOI : 10.1016/S0924-0136(00)00588-4

]. S. Jana and N. S. Ong, Effect of punch clearance in the high-speed blanking of thick metals using an accelerator designed for a mechanical press, Journal of Mechanical Working Technology, vol.19, issue.1, pp.55-72, 1989.
DOI : 10.1016/0378-3804(89)90066-1

]. S. Kalpakjian, Sheet metal forming processes, Manufacturing Processes for Engineering Materials, pp.0-201, 1991.

. Kal-91a-]-s and . Kalpakjian, Manufacturing processs for engineering materials, 1991.

S. H. Kim and H. Huh, Design sensitivity analysis of sheet metal forming processes with a direct differentiation method, Journal of Materials Processing Technology, vol.130, issue.131, pp.130-131, 2002.
DOI : 10.1016/S0924-0136(02)00797-5

P. Lenoir, C. Trompette, and . Fleury, Optimisation des structures, pp.9-11, 1987.

P. Krajnik, J. Kopac, and A. Sluga, Design of grinding factors based on response surface methodology, Journal of Materials Processing Technology, vol.162, issue.163, pp.162-163, 2005.
DOI : 10.1016/j.jmatprotec.2005.02.187

H. Kurtaran, A. Eskandarian, D. Marzougui, and N. E. Bedwi, Crashworthiness design optimization using successive response surface approximations, Computational Mechanics, vol.29, issue.4-5, pp.409-421, 2002.
DOI : 10.1007/s00466-002-0351-x

J. Kusiak and M. Pietrzyk, Artificial intelligence approach to the internal variablebased rheological model for steels, Proceeding of the Second International Conference on Intelligent Processing and Manufacturing of Materials IPMM'99, pp.773-778, 1999.

J. Kusiak and R. Kuziak, Modelling of microstructure and mechanical properties of steel using the artificial neural network, Journal of Materials Processing Technology, vol.127, issue.1, pp.115-121, 2002.
DOI : 10.1016/S0924-0136(02)00278-9

P. Lancaster and K. Salkauskas, An introduction: Curve and surface fitting, 1985.

H. M. Lee, B. H. Shin, and . Yang, An approach for multiple criteria simulation optimization with appication to turning operation, Computer and Industrial Engineering, vol.110, pp.375-386, 1996.

L. P. Lei, S. M. Hwang, and B. Kang, Finite element analysis and design in stainless steel sheet forming and its experimental comparison, Journal of Materials Processing Technology, vol.110, issue.1, pp.70-77, 2000.
DOI : 10.1016/S0924-0136(00)00735-4

]. J. Lem-85 and . Lemaitre, A continuous damage mechanics model for ductile fracture, Journal of Engineering Materials and Technology, vol.107, pp.83-89, 1985.

]. J. Lem-88, J. L. Lemaitre, and . Chaboche, Mécanique des matériaux solides, pp.343-444, 1988.

H. Livatyali and T. Altan, Prediction and elimination of springback in straight flanging using computer aided design methods, Journal of Materials Processing Technology, vol.117, issue.1-2, pp.262-268, 2001.
DOI : 10.1016/S0924-0136(01)01164-5

H. Livatyali, H. C. Wu, and T. Altan, Prediction and elimination of springback in straight flanging using computer-aided design methods, Journal of Materials Processing Technology, vol.120, issue.1-3, pp.348-354, 2002.
DOI : 10.1016/S0924-0136(01)01161-X

H. Livatyali, G. L. Kinzel, and T. Altan, Computer aided die design of straight flanging using approximate numerical analysis, Journal of Materials Processing Technology, vol.142, issue.2, pp.532-543, 2003.
DOI : 10.1016/S0924-0136(03)00655-1

D. Mackay, Information-Based Objective Functions for Active Data Selection, Neural Computation, vol.4, issue.4
DOI : 10.1088/0266-5611/1/3/006

]. Z. Marciniak and J. Duncan, The Mechanics of sheet metal forming. First published, pp.68-99, 1992.

A. Gomesa and . Awruchb, Comparison of response surface and neural network with other methods for structural reliability analysis, Structural Safety, vol.26, issue.1, pp.49-67, 2004.
DOI : 10.1016/S0167-4730(03)00022-5

M. Math and B. Grizelj, Finite element approach in the plate bending process, Journal of Materials Processing Technology, vol.125, issue.126, pp.125-126, 2002.
DOI : 10.1016/S0924-0136(02)00391-6

. Mau-94-]-p and . Maurice, Introduction aux plans d'expériences par la méthode de Taguchi, 1994.

. Mau-97-]-p and . Maurice, Les plans d'expériences par la méthode de Taguchi, 1997.

D. B. Mcdonald, W. J. Grantham, W. L. Tabor, and M. J. Murphy, Response surface model development for global/local optimization using radial basis functions, 8th Symposium on Multidisciplinary Analysis and Optimization, pp.6-10, 2000.
DOI : 10.2514/6.2000-4776

A. Monfort and . Bragard, Voraussage und reduzierung der Rückfederung beim biegen hockfester stahlbleche, Stahl. U. Eisen, vol.104, pp.1059-1064, 1984.

S. D. Müller, Bio-inspired optimization algorithms for engineering applications. PhD Swiss institute of technology, 2002.

R. H. Myers and D. C. Montgomery, Response Surface Methodology Process and Product Optimisation using Designed Experiments, 2002.

G. Nayroles, P. Touzot, and . Villon, Using the Diffuse Approximation for Optimizing the Location of Anti-Sound Sources, Journal of Sound and Vibration, vol.171, issue.1, pp.1-21, 1994.
DOI : 10.1006/jsvi.1994.1100

H. Ogawa and A. Makinouchi, Small radius bending of sheet metal by indentation with V-Shape punch, Proceedings of the 6th International Conference on Technology of Plasticity, pp.3-540, 1999.

T. Nakamura, E. Katayama, and . Nakamachi, Development of optimum process design system for sheet fabrication using response surface method, Journal of Materials Processing Technology, pp.143-144, 2003.

T. Osaki and T. Yoshikai, Effect of profile in basal section in shearing process. Memoire of the faculty of engineering, pp.249-273, 1978.

T. Osaki and S. S. Yamasaki, Effect of the geometry of cutting edge of tool in blanking process and punching. Memoire of the faculty of engineering, pp.371-395, 1984.

I. G. Osio and C. H. Amon, An engineering design methodology with multistage Bayesian surrogates and optimal sampling, Research in Engineering Design, vol.9, issue.2, pp.189-206, 1996.
DOI : 10.1007/BF01597226

. J. Par-92-]-d, B. E. Park, J. H. Jun, and . Kim, Novel Fast Training Algorithm for Multilayer Feedforward Neural Network, Elec. Letters, vol.28, p.6, 1992.

F. Pourboghrat and E. Chu, Prediction of spring-back and side-wall curl in 2-D draw bending, Journal of Materials Processing Technology, vol.50, issue.1-4, pp.361-374, 1995.
DOI : 10.1016/0924-0136(94)01398-K

. D. Pow-92-]-j and . Powell, The theory of radial basis function approximation in 1990 Advances in Numerical Analysis Wavelets, Subdivision Algorithms, and Radial Basis Function, pp.105-210, 1992.

A. Queener and R. J. De-angelis, Elastic sprigback and residual stresses in sheet metal parts formed by bending, Trans. ASME, vol.61, pp.757-768, 1968.

A. Rassineux, P. Breitkopf, and P. Villon, Simultaneous surface and tetrahedron mesh adaptation using mesh-free techniques, International Journal for Numerical Methods in Engineering, vol.98, issue.3, pp.371-389, 2003.
DOI : 10.1002/nme.681

M. Redhe, J. Forsberg, T. Jansson, P. Marklund, and L. Nilsson, Using the Response Surface Methodology and the D-Optimality Criterion in Crashworthiness Related problems. Structural and Multidisciplinary Optimisation, pp.185-194, 2002.

M. Redhe, L. Eng, and L. Nilsson, Using Space Mapping and Surrogate Models to Optimize Vehicle Crashworthiness Design, 9th AIAA/ISSMO Symposium on Multidisciplinary Analysis and Optimization, 2002.
DOI : 10.2514/6.2002-5536

L. M. Reyneri and E. Filippi, Modified backpropagation algorithm for fast learning in neural networks, Electronics Letters, vol.26, issue.19, p.19, 1990.
DOI : 10.1049/el:19901004

S. M. Roberts, J. Kusiak, Y. L. Liu, A. Forcellese, and P. J. Withers, Prediction of damage evolution in forged aluminium metal matrix composites using a neural network approach, Journal of Materials Processing Technology, vol.80, issue.81, pp.80-81, 1998.
DOI : 10.1016/S0924-0136(98)00153-8

S. M. Roberts and J. Kusiak, The application of artificial intelligence to the constitutive and microstructural behaviour of Nickel-base suerpalloys, The 4 th International ESAFORM Conference on Material Forming, pp.441-444, 2001.

W. J. Roux, N. Stander, and R. T. Haftka, Response surface approximations for structural optimization, International Journal for Numerical Methods in Engineering, vol.24, issue.3, pp.517-534, 1998.
DOI : 10.1002/(SICI)1097-0207(19980615)42:3<517::AID-NME370>3.0.CO;2-L

J. Sacks, W. J. Welch, T. J. Mitchell, and H. P. Wynn, Design and Analysis of Computer Experiments, Statistical Science, vol.4, issue.4, pp.409-435, 1989.
DOI : 10.1214/ss/1177012413

W. Serruys, Adaptative Bending, Proceeding of the 9 th International Conference on Sheet Metal, pp.90-73802, 2001.

T. W. Simpson, T. M. Mauery, J. J. Korte, and F. Mistree, Comparison of response surface and kriging models for multidisciplinary design optimization, 7th AIAA/USAF/NASA/ISSMO Symposium on Multidisciplinary Analysis and Optimization, pp.1-11, 1998.
DOI : 10.2514/6.1998-4755

U. P. Singh, S. K. Maiti, P. P. Date, and K. Narasimhan, Numerical simulation of the influence of air bending tool geometry on product quality, Proceeding of the 8 th International Conference on Sheet Metal, pp.0-95276, 2000.
DOI : 10.1016/S0924-0136(03)00443-6

R. Storn and K. Price, Differential evolution-A simple and efficient heuristic strategy for global optimization over continuous spaces, Journal of Global Optimization, vol.11, issue.4, pp.341-359, 1997.
DOI : 10.1023/A:1008202821328

A. Todoroki and T. Ishikawa, Design of experiments for stacking sequence optimizations with genetic algorithm using response surface approximation, Composite Structures, vol.64, issue.3-4, pp.349-357, 2004.
DOI : 10.1016/j.compstruct.2003.09.004

C. T. Wang, G. L. Kinzel, and T. Altan, Mathematical modeling of plane-strain bending of sheet and plate, Journal of Materials Processing Technology, vol.39, issue.3-4, pp.279-304, 1993.
DOI : 10.1016/0924-0136(93)90164-2

/. Structures, Parameter optimisation in radial basis function response surface approximationAIAA-2002-1344, Structural Dynamics, and Materials Conference, 2002.

R. L. Watrous, Learning Algorithms for connectionist Networks: Applied Gradient Methods of Non linear Optimization, IEEE First International Conf. On Neural Networks, 1987.

W. J. Welch, T. K. Yu, S. M. Kang, and J. Sacks, Computer experiments for quality control by parameter design, Journal of Quality Technology, vol.22, issue.1, pp.15-22, 1990.

S. Wolfram, L. Logiciel-mathematica, V. G. Wong, and M. K. Das, Analysis of stresses in bar cropping. 15 th, Int.Mach. tool. Res. Conference, pp.617-624, 1975.

W. L. Xu, C. H. Ma, C. H. Li, and W. J. Feng, Sensitive factors in springback simulation for sheet metal forming, Journal of Materials Processing Technology, vol.151, issue.1-3, pp.217-222, 2004.
DOI : 10.1016/j.jmatprotec.2004.04.044

M. Yang, K. I. Manabe, and H. Nishimura, Development of real-time process control system for precision and flexible V-bending with an on-line database, Journal of Materials Processing Technology, vol.60, issue.1-4, pp.249-254, 1996.
DOI : 10.1016/0924-0136(96)02338-2

J. B. Yang, B. H. Jeon, and S. I. Oh, Design sensitivity analysis and optimization of the hydroforming process, Journal of Materials Processing Technology, vol.113, issue.1-3, pp.1-3, 2001.
DOI : 10.1016/S0924-0136(01)00670-7

A. Zmudzki and J. Kusiak, Neural Networks based optimization in inverse analysis, Proceedings of the first invited COST 526 conference on Automatic Process Optimization in Materials Technology, Morschach ? Switzerland, pp.236-241, 2005.