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http://dx.doi.org/10.5228/KSPP.2006.15.4.281

Multi Stage Simulations for Autobody Member Part  

Park C.D. (부산대학교 정밀기계공학과)
Kim B.M. (부산대학교 정밀기계공학과)
Chung W.J. (서울산업대학교 금형설계학과)
Publication Information
Transactions of Materials Processing / v.15, no.4, 2006 , pp. 281-288 More about this Journal
Abstract
Most of automobile member parts experience severe springback problems because of their complicated shape and high yielding strength. Now it becomes imperative to develop an effective method to resolve these problems. However, there remain several obstacles to get accurate estimation of dimensional shape. Especially the effective algorithms to simulate sheet metal forming processes including drawing, trimming, flanging and springback is demanded for the multi stage simulation of automobile member parts. In this study, for the purpose of accurate springback calculation, a simulation program which is robust in springback analysis is developed. Favorable enhancement in computation time for springback analysis by using latest equation solving technique and robust solution convergence by continuation method are achieved with the program. In analysis, the multi processes of rear side member are simulated to verify the system. For the evaluation of springback accuracy practically, all conditions including boundary conditions for springback analysis and inspection conditions for dimensional accuracy are applied. The springback results of simulations show good agreement with the experiments.
Keywords
Multi-Stage Forming; Rear Side Member; Springback Simulation; High Strength Steel; Finite Element Analysis; Compensation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 S. W. Lee, 1997, Elastoplastic/Explicit Finite Element Formulation and Applications to Sheet Metal Working with Springback, Ph.D.Thesis, KAIST, Taejon, KOREA
2 T. Belytschko, C. Tsay, 1983, A Stabilization Procedure for the Quadrilateral Plate Element with One-Point Quadrature, Int. J. Numer. Methods Engs., 19, pp. 405-419   DOI   ScienceOn
3 B. M. Irons, 1970, A Frontal Solution Program for Finite Element Analysis, Int. J. Numer. Methods Engs., 2, pp. 5-32   DOI
4 W. Y. Yang, S. Y. Lee, Y. T. Keum, J. Y. Hwang, C. S. Yoon, C. S. Shin, W. S. Cho, 2003, Springback Control in the Forming Processes for High-strength Steel Sheets, J. of KSTP, Vol. 12, No. 8, pp. 718-723   과학기술학회마을   DOI   ScienceOn
5 I. S. Duff, J. K. Reid, 1973, The Multifrontal Solutions of Indefinite Sparse Symmetric liner Equations, ACM Trans. Math. Software, 9, pp. 302-325   DOI   ScienceOn
6 J. K. Lee, G L. Kinzel, R. H. Wagoner, 1996, Proceedings of the $3^{nd}$ International Conference NUMISHEET'96, Ohio State University, USA
7 E. Riks, 1979, An Incremental Approach to the Solution of Snapping and Buckling Problems, Int. J. Solids and Structure, 5, pp. 529-559
8 J. M. Lee, B. J. Ahn, Y. T. Keum, 1997, A Study on the Three-Dimensional Finite Element Analysis of Forming Processes of an Automotive Panel, J. of KSTP, Vol.6, No.2, pp. 152-160
9 Zhu, T. Zacharia, 1996, A New One-Point Quadrature, Quadrilateral Shell Element with Drilling Degrees of Freedom, Comput. Methods Appl. Mech. Eng., 136, pp. 165-22   DOI   ScienceOn
10 W. J. Chung, A Finite Element Analysis of Springback in Sheet Metal Forming, KSME-A, 23, pp. 2197-2208
11 Z-STAMP 매뉴얼
12 K. Mattiasson, P. Thilderkvist, A. Strange, A. Samuelsson, 1995, Simulatiion of Springback in Sheet Metal Forming, Proceedings of NUMIFORM'95, edited by S. Shen and P. R. Dawson, A. A. Balkema, Rotterdam, pp. 637-641
13 W. J. Chung, J. W. Cho, B. Belytscko, 1996, A Study on the Dynamic Effects of Dynamic Explicit FEM in Sheet Metal Forming Analysis, Proceedings of NUMISHEET'96, pp. 444-464
14 A. Makinouchi, E. Nakamachi, E. Onate, R. H. Wagoner, 1993, Proceedings of the $2^{nd}$ International Conference NUMISHEET'93, Isehara Japan