Abstract
Draw beads are used in sheet metal forming processes to regulate material flow and achieve higher quality in the parts. The draw beads impose draw restraining force on the blank which eliminates defects such as wrinkling, tearing and reduces springback. In a draw-bend test, the draw restraining force is imitated by the back force applied through a hydraulic ram. As the back force increases, large strain is induced which reduces springback tendency. This study evaluates the influence of back force on the springback behavior in advanced high strength steel (AHSS). Three grades of dual-phase steel, namely DP600, DP800, DP980, are used with normalized back forces ranging from 0.5 to 1.1. The springback decreases as the back force increases. Anticlastic curvature as well as curl radius has significant influence on the springback behavior of dual phase steels.
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REFERENCES
Wei Gan, R.H. Wagoner, Die design method for sheet springback, International Journal of Mechanical Sciences 46 (2004) 1097–1113.
M.C. Oliveira, J.L. Alves, B.M. Chaparro, L.F. Menezes, Study on the influence of work-hardening modeling in springback prediction, International Journal of Plasticity23 (2007) 516–543.
J-H. Song, H. Huh, S-H. Kim, A simulation-based design parameter study in the stamping process of an automotive member, Journal of Materials Processing Technology 189 (2007) 450–458.
W.D. Carden, L.M. Geng, D.K. Matlock, R.H. Wagoner, Measurement of Springback, International Journal of Mechanical Sciences 44 (2002) 79–101.
K.P. Li, W.P. Carden, R.H. Wagoner, Simulation of Springback, International Journal of Mechanical Sciences 44 (2002) 103–122.
G.J. Wenzloff, T.A. Hylton, D.K. Matlock, A new procedure for the bending under tension friction test. Journal of Material Engineering and Performance, 1(5) (1992) 609–613.
D.W. Vallance, D.K. Matlock, Application of the bending-under-tension friction test to coated sheet steels, Journal of Material Engineering and Performance, 1(5) (1992) 685–693.
J.F. Wang, R.H. Wagoner, D.K. Matlock, F. Barlat, Anticlastic curvature in draw-bend springback, International Journal of Solids and Structures 42 (2005) 1287–1307.
L. Geng, R.H. Wagoner, Role of plastic anisotropy and its evolution on springback, International Journal of Mechanical Sciences 44 (2002) 123–148.
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Padmanabhan, R., Sung, J., Lim, H. et al. Influence of draw restraining force on the springback in advanced high strength steels. Int J Mater Form 1 (Suppl 1), 177–180 (2008). https://doi.org/10.1007/s12289-008-0020-5
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DOI: https://doi.org/10.1007/s12289-008-0020-5