Abstract
This paper combines plasticity and circle grid analysis to investigate the deformation mechanics and failure in hole-flanging produced by single point incremental forming (SPIF). The approach is based on circle grid analysis and allows tracing strains and stresses along the deformation history of material to compare their maximum achievable values against necking and fracture limits in the principal strain and stress spaces. The overall methodology draws from the independent characterization of necking and fracture limits by means of sheet metal formability tests to the appraisal of strain loading paths in hole-flanging with blanks having different pre-cut hole diameters. The work is supported by experimentation in aluminium AA1050-H111 and the overall investigation widens previous research in the field by presenting the first set of experimental data covering the history of material strains, stresses and their corresponding formability limits.
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References
Jeswiet J, Micari F, Hirt G, Bramley A, Duflou J, Allwood J (2005) Asymmetric single point incremental forming of sheet metal. Annals of CIRP 54:623–650
Echrif SBM, Hrairi M (2011) Research and progress in incremental sheet forming processes. Mater Manuf Process 26:1404–1414
Silva MB, Skjoedt M, Atkins AG, Bay N, Martins PAF (2008) Single point incremental forming and formability/failure diagrams. J Strain Anal Eng Des 43:15–36
Cui Z, Gao L (2010) Studies on hole-flanging process using multistage incremental forming. CIRP J Manuf Sci Technol 2:124–128
Petek A, Kuzman K, Fijavž R (2011) Backward drawing of necks using incremental approach. Key Eng Mater 473:105–112
Centeno G, Silva MB, Cristino V, Vallellano C, Martins PAF (2012) Hole-Flanging by Incremental Sheet Forming. Int J Mach Tool Manuf 59:46–54
Silva MB, Teixeira P, Reis A, Martins PAF (2013) On the formability of hole-flanging by incremental sheet forming. J Mater Des Appl 227:91–99
Keeler SP (1968) Circular Grid System — A valuable aid for evaluating sheet metal formability. SAE Technical Paper 680092
Goodwin G (1968) Application of strain analysis to sheet metal forming problems in the press shop. SAE Technical Paper 680093
Westergaard HM (1920) On the resistance of ductile materials to combined stresses. J Frankl Inst 189:627–640
Glover G, Duncan JL, Embury JD (1977) Failure maps for sheet metal. Met Technol 4:153–159
NP EN 10 002–1 (2006) Metallic materials: Tensile test. Part 1: method of testing at room temperature (Portuguese Standard)
Silva MB, Nielsen PS, Bay N, Martins PAF (2011) Failure mechanisms in single-point incremental forming of metals. Int J Adv Manuf Technol 56:893–903
Atkins AG (1997) Fracture mechanics and metal forming: damage mechanics and the local approach of yesterday and today. In: Rossmanith HP (ed) Fracture Research in Retrospect. A. A. Balkema, Rotterdam, pp 327–350
Hill R (1948) A theory of yielding and plastic flow of anisotropic metals. Proc R Soc Lond Ser A 193:281–297
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Montanari, L., Cristino, V.A., Silva, M.B. et al. A new approach for deformation history of material elements in hole-flanging produced by single point incremental forming. Int J Adv Manuf Technol 69, 1175–1183 (2013). https://doi.org/10.1007/s00170-013-5117-4
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DOI: https://doi.org/10.1007/s00170-013-5117-4