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http://dx.doi.org/10.3795/KSME-A.2012.36.11.1361

Shape Optimization of Metal Forming and Forging Products using the Stress Equivalent Static Loads Calculated from a Virtual Model  

Jang, Hwan-Hak (Dept. of Mechanical Engineering, Hanyang Univ.)
Jeong, Seong-Beom (Dept. of Mechanical Engineering, Hanyang Univ.)
Park, Gyung-Jin (Dept. of Mechanical Engineering, Hanyang Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.36, no.11, 2012 , pp. 1361-1370 More about this Journal
Abstract
A shape optimization is proposed to obtain the desired final shape of forming and forging products in the manufacturing process. The final shape of a forming product depends on the shape parameters of the initial blank shape. The final shape of a forging product depends on the shape parameters of the billet shape. Shape optimization can be used to determine the shape of the blank and billet to obtain the appropriate final forming and forging products. The equivalent static loads method for non linear static response structural optimization (ESLSO) is used to perform metal forming and forging optimization since nonlinear dynamic analysis is required. Stress equivalent static loads (stress ESLs) are newly defined using a virtual model by redefining the value of the material properties. The examples in this paper show that optimization using the stress ESLs is quite useful and the final shapes of a forming and forging products are identical to the desired shapes.
Keywords
Equivalent Static Loads; Shape Optimization; Nonlinear Dynamic Analysis; Forming; Forging;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Jung, U. J., Lee, J. J. and Park, G. J., 2011, "A Preliminary Study on the Optimal Shape Design of the Axisymmetric Forging Component using Equivalent Static Loads," Trans. of KSME (A), Vol. 35, No. 1, pp. 1-10.
2 LS-DYNA User's Manual Version 971, 2007, Livermore Software Technology Corporation.
3 MD NASTRAN 2010 User's Guide, 2010, MSC Software Corporation.
4 Sheriff, N. M. and Ismail, M. M., 2008, "Numerical Design Optimization of Drawbead Position and Experimental Validation of Cup Drawing Process," Journal of Materials Processing Technology, Vol. 206, No. 1-3, pp. 83-91.   DOI   ScienceOn
5 Blount, G. N. and Stevens, P. R., 1990, "Blank Shape Analysis for Heavy Gauge Metal Forming," Journal of Materials Processing Technology, Vol. 24, No. 6, pp. 65-74.   DOI   ScienceOn
6 Park, G. J., 2007, Analytical Methods for Design Practice, Springer, Berlin, 255-310.
7 Kim, D.H., Lee, J.M, Park, S.H., Yang, D.Y. and Kim, Y.H., 1997, "Blank Design System for Sheet Forming," Journal of the Korean Society for Technology of Plasticity, Vol. 6, No. 5, pp. 400-406.
8 Lee, C. H. and Huh, H., 1998, "Three Dimensional Multi-step Inverse Analysis for the Optimum Blank Design in Sheet Metal Forming Processes," Journal of Materials Processing Technology, Vol. 80-81, pp. 76-82.   DOI   ScienceOn
9 Lee, C. and Cao, J., 2001, "Shell Element Formulation of Multi-step Inverse Analysis for Axisymmetric Deep Drawing Process," International Journal for Numerical Method in Engineering, Vol. 50, No. 3, pp. 681-706.   DOI
10 Kim, Y. I. and Park, G. J., 2010, "Nonlinear Dynamic Response Structural Optimization using Equivalent Static Loads," Comput. Methods Appl. Mech. Engrg., Vol. 199, No. 9/12, pp. 660-676.   DOI   ScienceOn
11 Shin, M. K., Park, K. J. and Park, G. J., 2007, "Optimization of Structures with Nonlinear Behavior Using Equivalent Loads," Comput. Methods Appl. Mech. Engrg., Vol. 196, No.4, pp. 1154-1167.   DOI   ScienceOn
12 Lee, J. J. and Park, G. J., 2011, "Shape Optimization of the Initial Blank in the Sheet Metal Forming Process Using Equivalent Static Loads," Int. J. Numer. Meth. Engng., Vol. 85, No. 2, pp. 247-268.   DOI   ScienceOn
13 Keum, Y. T., Kim, J. H. and Choo, B. Y., 2001, "Expert Drawbead Models for Finite Element Analysis of Sheet Metal Forming Processes," International Journal of Solids and Structures, Vol. 38, No. 1, pp. 5335-5353.   DOI   ScienceOn
14 Guan, J., Wang, G. C., Song, L.B. and Zhao, G. Q., 2009, "The Microstructure Optimization of H-Shape Forgings Based on Preforming Die Design," Materials Science and Engineering A, Vol. 499, No. 1-2, pp. 304-308.   DOI   ScienceOn
15 Zhang, W. and Shivpuri, R., 2009, "Probabilistic Design of Aluminum Sheet Drawing for Reduced Risk of Wrinkling and Fracture," Reliability Engineering and System Safety, Vol. 94, No. 2, pp. 152-161.   DOI   ScienceOn
16 Chengzhi, S., Guanlong, C. and Zhongqin, L., 2005, "Determining the Optimum Variable Blank-Holder Forces Using Adaptive Response Surface Methodology (ARSM)," International Journal of Advanced Manufacturing Technology, Vol. 26, No. 1-2, pp. 23-29.   DOI
17 Jolgaf, M., Sulaiman, S. B., Ariffin, M. K. A. and Faieza, A. A., 2008, "Closed Die Forging Geometrical Parameters Optimization for AI-MMC," American Journal of Engineering and Applied Science, Vol. 1, No. 1, pp. 1-6.   DOI
18 Thiyagarajan, N. and Grandhi, R. V., 2005, "Multilevel Design Process for 3-D Preform Shape Optimization in Metal Forming," Journal of Materials Processing Technology, Vol. 170, No. 1-2, pp. 421-429.   DOI   ScienceOn
19 Tang, Y. C., Zhou, X. H. and Chen, J., 2008, "Preform Tool Shape Optimization Redesign Based on Neural Network Response Surface Methodology," Journal of Finite Elements in Analysis and Design, Vol. 44, No. 8, pp. 462-471.   DOI   ScienceOn
20 Shivpuri, R. and Zhang, W., 2009, "Robust Design of Spatially Distributed Friction for Reduced Wrinkling and Thinning Failure in Sheet Drawing," Material and Design, Vol. 30, No. 6, pp. 2043-2055.   DOI   ScienceOn
21 Ostwald, P. F. and Munoz, J., 1989, Manufacturing Process and System, John Wiley and Sons, Inc., New York, pp. 1-477.
22 Kalpakjian, S. and Schmid, S. R., 2001, Manufacturing Engineering and Technology, Prentice-Hall, New Jersey, pp. 1-439.
23 Lee, D. M., 2005, Technology of Plasticity, Munundang, Seoul, pp. 1-577.