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Mechanics of ISF

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Mechanics of ISF

  • The mechanics of ISF is similar to that of conventional spinning, shear forming and flow forming in that the deformation mechanism is localized to a small region under the forming tool
  • Deformation occurring in forming products is due to local stretching and bending occurs at clamping position
  • Strain conditions ranges from pure uni-axial stretching to bi-axial stretching and dominant mode of failure is due to excessive thinning of the sheet in areas overstretched
  • Researchers such as Kim, Yoon, and Yang [7, 8], Filice et al [9], Fratini et al  [10] and Hirt et al [11] have made contributions to the understanding of the mechanics of incremental sheet forming and overcoming existing limitations
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[7] Kim T. J. and Yang D. Y. Improvement of formability for the incremental sheet metal forming process. Int. J. Mech. Sci., 2001, 42, 1271-1286. [8] Yoon SJ, Yang DY Investigation into a new incremental forming process using an adjustable punch set for the manufacture of a doubly curved sheet metal, Proc. Inst. of Mech. Engineers, part B, J Eng Manuf 215, 7, 2001, 991–1004. [9] Filice L. Fratini L and Micari F. Analysis of material formability in incremental forming, Annals of the CIRP, 51, 1, 2002, 199-202. [10] Fratini L, Ambrogio G, Di Lorenzo R, Filice L and Micari F. Influence of Mechanical Properties of the sheet Material on formability in single point incremental forming. Annals of the CIRP, 53, 1, 2004, 207-209. [11] Hirt G, Ames J, Bambach M and Kopp R. Forming strategies and Process modelling for CNC Incremental sheet forming. Annals of the CIRP, 53, 1, 2004, 203-206.

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