Production Engineering and Metallurgy Dept. Baghdad, Iraq


Springback forecasting of sheet formation is constantly remarkable problem in the métier, due to their influence the great in the definitive shape of the product. Study presents effects of pretension in tow rolling direction (0, 45 degree) on the springback behavior of the (Brass 65-35) sheet under V-die bending by an experimental. The pretension ranges from five different pretensions levels starting from 11% to 55% from total strain in each rolling direction by increment of 11%. used in punching that was performed at a constant deformation velocity of (5 mm/min) then bent on a 90° V-shaped die for the springback evaluation. The results from experiment indicate that the springback increase with pretension ratio and the springback in 45 degree is higher in rolling direction.


[1] A. Elsayed, M. Mohamed, M. Shazly and A. Hegazy, “An investigation and prediction of springback of sheet metals under cold forming condition,” IOP Conf. Ser. Mater. Sci. Eng., vol. 280, no. 1, 2017.
[2] E. T. Akinlabi, K. Matlou and S. A. Akinlabi, “Characterising the effect of springback on mechanically formed steel plates,” Lect. Notes Eng. Comput. Sci., vol. 1 LNECS, pp. 5–8, 2013.
[3] A. Ivaniševic, M. Milutinovi, B. Štrbac and P. Skakun, “Stress state and spring back in v-bending,” J. Technol. Plast., vol. 39, no. 2, pp. 158–168, 2013.
[4] D.K. Leu and Z. W. Zhuang, “Springback prediction of the vee bending process for high-strength steel sheets,” J. Mech. Sci. Technol., vol. 30, no. 3, 2016.
[5] J. S. Trivedi M, “Characterization of physical and structural properties of brass powder after biofield treatment,” J. Powder Metall. Min., vol. 04 , 2015.
[6] S. B. Chikalthankar and G. D. Belurkar, “Factors affecting on springback in sheet metal bending: a review” Int. J. Eng. Adv. Technol., vol. 3, no. 4, 2014.
[7] M. Krinninger, D. Opritescu, R. Golle and W. Volk, “Experimental Investigation of the influence of punch velocity on the springback behavior and the flat length in free bending,” Procedia CIRP, vol. 41, pp. 1066–1071, 2016.
[8] M. Arunkumar, “Design and analysis of a spring back effect in sheet metal forming,” no. May 2016, pp. 0–7, 2018.
[9] T. Kartik and R. Rajesh, “Effect of punch radius and sheet thickness on spring-back in V-die bending,” Adv. Nat. Appl. Sci., vol. 11, no. 8, pp. 178–184, 2017.
[10] R. D. Gedekar, S. R. Kulkarni, and M. B. Kavad, “Optimization of input process parameters affecting on springback effect in sheet metal „V‟ bending process for CR2 grade steel sheet of IS 513-2008 material by using taguchi method,” Int. Res. J. Eng. Technol., no. July, p. 381, 2008.
[11] Z. Yue, J. Qi, X. Zhao, H. Badreddine, J. Gao, and X. Chu, “Springback prediction of aluminum alloy sheet under changing loading paths with consideration of the influence of kinematic hardening and ductile damage,” Metals Basel ., vol. 8, no. 11, p. 950, 2018.
[12] V. Drossou-Agakidou. ASM handbook properties and selection: nonferrous alloys and special-purpose materials," Vol. 2, vol. 157, no. 7. 1998.
[13] W. Materials, R. Head, "Standard Test methods for tension testing of metallic materials," Designation: E-8,ASTM American Association State,” vol. 88, 1989