Abstract
Novel finite element analyses and a series of experiments are performed to clarify basic characteristics of high-strength steel sheet metal during fabrication by asymmetric V-die bending processes. The proposed strategy for elastic–plastic FE simulation is used to simulate asymmetric V-die bending process to test its viability for friction contact processes. Accordingly, a series of experiments is performed to verify the numerical simulation. The calculation agrees well with the experiment. The effects of process parameters such as lubrication (contact friction), material properties, and process geometries on position deviation in bending point were experimentally tested to determine the dominant parameters for minimizing position deviation in sheet metal bending processes. Moreover, springback phenomenon is also discussed to minimize bending defects and to obtain a precise asymmetric bent component. This study could be used as a process design guideline for asymmetric bending of high-strength steel sheets.
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References
Gardiner FJ (1957) The springback of metals. ASME J Appl Mech 79:1–9
Weinmann KJ, Shippell RJ (1978) Effect of tool and workpiece geometries upon bending forces and springback in 90 degree V-die bending of HSLA steel plate. In: Sixth North American Metal Working Research Conference Proceeding, pp 220–227
Huang YM, Takizawa H, Makinouchi A, Nakagawa T (1989) Elastic–plastic analysis of V-bending process. In: Spring Proc. Plastic Working, Cho-Fu, Tokyo, pp 275–278
Huang YM, Lu YH, Makinouchi A (1992) Elasto-plastic finite-element analysis of V-shape sheet bending. J Mater Process Technol 35:129–150
Ogawa H, Makinouchi A, Takizawa H, Mori N (1993) Development of an elasto-plastic FE code for accurate prediction of springback in sheet bending processes and its validation by experiments. In: Advanced Technology of Plasticity, Proceeding of the Fourth International Conference on Technology of Plasticity, pp 1641–1646
Huang YM, Chen TC (2005) Influence of blank profile on the V-die bending camber process of sheet metal. Int J Adv Manuf Technol 25:668–677
Huang YM (2007) Finite element analysis on the V-die coining bend process of steel metal. Int J Adv Manuf Technol 34:287–294
Datsko J, Yang CT (1960) Correlation of bendability of materials with their tensile properties. ASME J Eng Ind 82:309–314
Takenaka N, Tozawa Y, Suzuki K (1971) Material characteristic value for evaluation of bendability and methods for measuring these values. Ann CIRP 20:53–54
Cupka V, Nakagawa T, Tiyamoto H, Kudo H (1973) Fine bending with counter pressure. Ann CIRP 22:73–74
Kals JAG, Veenstra PC (1974) On the critical radius in sheet bending. Ann CIRP 23:55–56
Wang C, Kinzel G, Altan T (1993) Mathematical modeling of plane-strain bending of sheet and plate. J Mater Process Technol 39:279–304
Leu DK (1997) A simplified approach for evaluation bendability and springback in plastic bending of anisotropic sheet metals. J Mater Process Technol 66:9–17
Bakhshi-Jooybari M, Rahmani B, Daeezadeh V, Gorji A (2009) The study of spring-back of CK67 steel sheet in V-die and U-die bending processes. Mater Des 30(7):2410–2419
Narayanasamy R, Padmanabhan P (2009) Application of response surface methodology for predicting bend force during air bending process in interstitial free steel sheet. Int J Adv Manuf Technol 44:38–48
Farsi MA, Arezoo B (2009) Development of a new method to determine bending sequence in progressive dies. Int J Adv Manuf Technol 43:52–60
Yu HY (2009) Variation of elastic modulus during plastic deformation and its influence on springback. Mater Des 30:846–850
Ramezani M, Mohd Ripin Z, Ahmad R (2010) Modelling of kinetic friction in V-bending of ultra-high-strength steel sheets. Int J Adv Manuf Technol 46:101–110
Ramezani M, Mohd Ripin Z (2010) A friction model for dry contacts during metal-forming processes. Int J Adv Manuf Technol 51:93–102
Kardes Sever N, Mete OH, Demiralp Y, Choi C, Altan T (2012) Springback prediction in bending of AHSS-DP 780. In: Proceedings of NAMRI/SME 40, pp 1–10
Fu ZM (2012) Numerical simulation of springback in air-bending forming of sheet metal. Appl Mech Mater 121–126:3602–3606
Malikov V, Ossenbrink R, Viehweger B, Michailov V (2012) Experimental investigation and analytical calculation of the bending force for air bending of structured sheet metals. Adv Mater Res 418–420:1294–1300
McMeeking RM, Rice JR (1975) Finite element formulations for problems of large elastic–plastic deformation. Int J Solids Struct 11:601–606
Oden JT, Pries EB (1983) Nonlocal and nonlinear friction law and variational principles for contact problems in elasticity. ASME J Appl Mech 50:67–76
Yamada Y, Yoshimura N, Sakurai T (1968) Plastic stress–strain matrix and its application for the solution of elastic–plastic problems by the finite element method. Int J Mech Sci 10:343–354
Leu DK (1996) Finite-element simulation of hole-flanging process of circular sheets of anisotropic materials. Int J Mech Sci 38(8–9):917–933
Ohwue T, Yoshida T, Shirai Y, Kikuma T (2002) Experiments and static implicit FEM analysis of springback in bend forming of bumper model. J JSTP 43(494):219–223
Leu DK (1998) Effects of process variables on V-die bending process of steel sheet. Int J Mech Sci 40(7):631–650
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Leu, DK. Position deviation in V-die bending process with asymmetric bend length. Int J Adv Manuf Technol 64, 93–103 (2013). https://doi.org/10.1007/s00170-012-3998-2
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DOI: https://doi.org/10.1007/s00170-012-3998-2