CIRP Encyclopedia of Production Engineering

Living Edition
| Editors: Sami Chatti (Editor-in-Chief), Luc Laperrière (Editor-in-Chief), Gunther Reinhart (Editor-in-Chief), Tullio Tolio (Editor-in-Chief), The International Academy for Production

Springback

  • Z. Cedric Xia
  • Jian Cao
Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-35950-7_6500-4

Synonyms

Definition

Springback is generally referred to as the change of part shape that occurs upon removal of constraints after forming.

Theory: Mechanics of Springback

Springback can be considered as a dimensional change which happens during unloading, due to the occurrence of primarily elastic recovery of the part. After springback the part reaches an internal equilibrium in the absence of external forces. Residual stresses still exist within the part; however, they are self-balanced. Take a simple bending case in Fig. 1, for example. Under the loaded condition of bending, the top surface is under tension, while the inner surface is under compression (Fig. 2a). During the unloading stage, one can consider...
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References

  1. Ayres RA (1984) Shape set: a process to reduce sidewall curl Springback in high strength steel rails. J Appl Metalwork 3:127–134CrossRefGoogle Scholar
  2. Karafillis AP, Boyce MC (1992) Tooling design in sheet metal forming using springback calculations. Int J Mech Sci 34:113–131CrossRefGoogle Scholar
  3. Liu YC (1988) The effect of restraining force on shape deviations in flanged channels. J Eng Mater Tech ASME Trans 110:389–394CrossRefGoogle Scholar
  4. Owens HW (2001) Flow lock bead control apparatus and methods for drawing high strength steels. US Patent 6276185 B1Google Scholar
  5. Sunseri M, Cao J, Karafillis AP, Boyce MC (1996) Accommodation of springback in channel forming using active binder control. Trans ASME J Eng Mater Technol 118:426–435CrossRefGoogle Scholar
  6. Wu L (1997) Tooling mesh generation technique for iterative FEM die surface design algorithm to compensate for springback in sheet metal stamping. Eng Comput 14:630–618CrossRefMATHGoogle Scholar

Copyright information

© CIRP 2018

Authors and Affiliations

  • Z. Cedric Xia
    • 1
  • Jian Cao
    • 2
  1. 1.Research and Innovation CenterFord Motor CompanyDearbornUSA
  2. 2.Department of Mechanical EngineeringNorthwestern University, McCormick School of Engineering and Applied ScienceEvanstonUSA

Section editors and affiliations

  • Bernd-Arno Behrens
    • 1
  1. 1.Institute of Forming Technology and Machines (IFUM)Leibniz Universität Hannover (LUH)GarbsenGermany