Effects of Material Orientation on Air Bending of Interstitial free Steel Sheet
Keywords:
Springback, IF steel, Air bendingAbstract
In this work, material orientations which affect bending behavior of Interstitial Free (IF) steel sheets that are subjected to air bending process have been studied. A detailed experimental study of air bending process was carried out considering various orientations namely, 00,450 and 900 to the rolling direction. The tensile tests were carried out for the three orientations to determine the material properties related to bending process. The chemical composition and microstructures for bend and unbend regions were obtained. The effect of orientations on punch load, bend angle, springback and obtained results were discussed in detail. It is observed that the 00 samples experience larger springback than the 450 and 900 test samples. It is generally found that the springback exhibited a polynomial relationship with the punch travel. A statistical analysis has been carried out to determine the appropriate deviation in the material model.
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References
Higgins.R.A, 1998, Engineering Metallurgy-Applied Physical Metallurgy, Viva Low Priced Edition.
Mary Gotzinger, Kalyanasundaram.S, Cardew-Hall.M,2001, A Methodology for Springback Prediction, SAE, 2001-01-3409, pp1181-1186.
Narayanasamy .R, Ponalagusamy. R, 2000, Theory of Engineering Plasticity, Ahuja Book Company Pvt Ltd, pp 104-114.
Garcia-Romeu.M.L,Ciurana.J,Ferrer.I, 2007,Springback Determination of Sheet Metals in an Air Bending Process Based on an Experimental Work, J of Mater Processing Tech,191 pp 174-177.
Bruni.C,Forcellese.A,Gabrielli.F,Simoncini.M, 2006,Air Bending of A231 Magnesium Alloy in Warm and Hot Forming Conditions, J of Mater Processing Tech,177, pp 373-376.
Hill .R, 1956, The Mathematical Theory of Plasticity, Oxford at the Clarendon Press.
Yu.T.X, Johnson.W, 1981,The Press-brake Bending of Rigid/Linear Work Hardening Plates, Int J of Mech Sciences, 23, pp 307-318.
Tylan Altan, Chuantao Wang, Gary Kinzel, 1993,Mathematical Modeling of Plane Strain Bending of Sheet and Plate, J of Mater Processing Tech, 39, 27 pp229-307.
Daw-Kwei Leu, 1997, A Simplified Approach for Evaluating Bendability and Springback in Plastic Bending of Anisotropic Sheet Metals, J of Mater Processing Tech, 66, pp 9-17.
You- Min Huang, Daw-Kwei leu, 1998, Effects of Process Variables on V- die Bending Process of Steel Sheet, Int J of Mech Sciences, 40, pp 631-650.
Elkins.K.L, Sturges.R.H, 1999, Springback Analysis and Control in Small Radius Air Bending, J of Manu Science and Engg, ASME, 121, pp 679-688.
Aleksy A. Konieczny, Ming F. Shi, Chng Qing Du, An Experimental Study of Springback for Dual Phase Steel and Conventional High Strength Steel, SAE 2001-01-3106, pp 1063-1067.
Cardeen.W.D, Geng.L.M, Matlock.D.K, Wagoner.R.H, 2002, Measurement of Springback, Int J of Mech Sciences, 44, pp 79-101.
Perdujin.A.B, Hoogenboom.S.M1995, The Pure Bending of Sheet, J of Mater Processing Tech, 51, pp 274-295.
Zhang.Z.T, S.J, 1997, Mathematical Modeling in Plane Strain Bending, SAE 970439, pp 458 – 470.
Huang .M, Gerdeen.J.C, 1994, Springback of Doubly Curved Developable Sheet Metal Surfaces – An Overview, SAE 940938, pp 718-728.
Livatyali.H, Altan.T, 2001, Prediction and Elimination of Springback in Straight Flanging using Computer Aided Design ethods. Part-I: Experimental Investigations, J of Mater Processing Tech, 117, pp 262-268.
Lumin Geng, Wagoner.R.H, 2002, Role of Plastic Anisotropy and its Evolution on Springback, Int J of Mech Sciences 44, pp 123-148.
Weilong Hu, 2000, Experimental Strain Hardening Behaviors and Associated Computational Models with Anisotropic Sheet Metals, Computational Materials Science, 18, pp 355-361.
Gary Harlow.D, 2004, The Effect of Statistical Variability in Material Properties on Springback, Int J of Mater and Product Tech, Vol20, Nos1-3, pp 180-192.
Zafer Tekiner, 2004,An Experimental Study on the Examination of Springback of Sheet Metals with Several Thicknesses and Properties in Bending Dies, J of Material Processing Technology,145, pp 109-117.
Carlos Gomes,Oladipo Onipede,Michael Lovell, 2005,Investigation of Springback in High Strength Anisotropic Steels, J of Material Processing Technology,159, pp 91-98.
Jenn-Terng Gau,Gary L Kinzel, 2005,A New Model for Springback Prediction for Aluminum Sheet Foming, J of Engineering Materials and Technology,127, pp 279-288.
Ozgur Tekaslan, Ulvi Seker, Ahmet Ozdemir, 2006, Determining Springback Amount of Steel Sheet Metal has 0.5mm Thickness in Bending Dies, Materials and Design, 27, pp 251-258.
Peng Chen,Muammer Koc, 2007,Simulation of Springback Variation in Forming of Advanced High Strength Steels, J of Material Processing Technology,190, pp 189-198.
Hyunok Kim,Ninad Nargundkar,Taylan Altan, 2007,Prediction of Bend Allowance and Springback in Air Bending, J of Manu Science and Engg ,Vol129, pp 342-351.
Samuel.M, 2000,Experimental and Numerical Prediction of Springback and Side Wall Curl in U- bendings of Anisotropic Sheet Metals, J of Mater Proce Tech, 105, pp 382-393.
Li.K.P, Carden.W.P, R.H Wagoner, 2002, Simulation of Springback, Int J of Mech Sciences, 44, pp 103-122.
Yu T.X, Zhang L.C, 1995, Plastic Bending – Theory and Applications, World Scientific, pp 182-186.
