Nasze serwisy używają informacji zapisanych w plikach cookies. Korzystając z serwisu wyrażasz zgodę na używanie plików cookies zgodnie z aktualnymi ustawieniami przeglądarki, które możesz zmienić w dowolnej chwili. Więcej informacji odnośnie plików cookies.

Obowiązek informacyjny wynikający z Ustawy z dnia 16 listopada 2012 r. o zmianie ustawy – Prawo telekomunikacyjne oraz niektórych innych ustaw.

Wyłącz komunikat



Logowanie za pomocą Centralnej Usługi Uwierzytelniania PRz. Po zakończeniu pracy nie zapomnij zamknąć przeglądarki.


85 (4/13), DOI: 10.7862/rm.2013.47

Experimental and numerical analysis of springback prediction in U-bendings of anisotropic sheet metals

Ján Slota, Miroslav Jurčišin, Milan Dvořák

DOI: 10.7862/rm.2013.47


Springback is one of the most important problems that should be taken into consi-deration during design of sheet metal forming process with the increasing application of advanced high strength steels and light-weight alloys. The degree of springback experienced with the latest generation materials is so high, and the materials so strong, that it is not possible to eliminate the springback in the prototyping. It becomes mandatory to compensate for springback as part of the draw die design, which is usually carried out through numerical simulation. The springback behavior of three categories of sheet steels (TRIP, HSLA and mild steel) with thicknesses ranging from 0.75 to 0.85 mm was investigated by means of the cyclic U-bending test. This phenomenon can be defined as an elastically-driven change of shape of the deformed part upon removal of external loads. Steel sheets were bent on the two different die radii and after first cycle were bent reverse. The influence of die radius on amount of springback of the steels was considered. Value of the springback angle change after the first and second cycle was measured. The change of values of angles between cycles is caused by the Bauschinger effect. This process was investigated experimentally and numerically. Numerical investigation was performed in static implicit finite element code Autoform.

Full text (pdf)


  1. Ling Y.E., Lee H.P., Cheok B.T.: Finite element analysis of springback in L-bending of sheet metal. J. Mat. Proc. Technol., 168 (2005), 296-302.
  2. Wagoner R.H., Lim H., Lee M.G.: Advanced issues in springback. Int. J. Plasticity, 45 (2013), 3-20.
  3. Hu Y.: Simulating the die gap effect on springback behavior in stamping processes. SAE Technical Paper 2000-01-1111.
  4. Brabie G., Chirita B., Nanu N., Ciubotariu V.: Analysis of the springback and residual stresses generated by cold plastic forming in draw round parts made from steel sheets. Met. Int., 12-14 (2009), 21-27.
  5. Stachowicz F., Frącz W.: An experimental and numerical study of thin sheet metal bending. Trans. TAU, 9 (2002), 177-180.
  6. Stachowicz F., Litwin P., Frącz W.: Experimental and numerical study of open structural profile bending process. Arch. Metall. Mater., 50 (2005), 905-919.
  7. Frącz W., Stachowicz F.: Springback phenomenon in sheet metal V-die air bending – experimental and numerical study. Manuf. Eng., 7 (2008), 34-37.
  8. Frącz W., Litwin P., Stachowicz F.: Analysis of bending characteristics of open structural profile. 18th Int. Conf. Computer Methods in Mechanics, Zielona Góra 2009, 177-178.
  9. Su C.J., Zhang G.H., Guo S.M., Gao L., Ma R.: Influence of friction on springback of quadrangle parts bending. Adv. Mat. Res., 217-218 (2011), 619-624.
  10. Nanu N., Brabie G.: Analytical model for prediction of springback parameters in the case of U stretch-bending process as a function of stresses distribution in the sheet thickness. Int. J. Mech. Sci., 64 (2012), 11-21.
  11. Slota J., Jurčišin M., Spisak E.: Numerical and experimental springback determination of sheet metals in an air bending process. Acta Metallurgica Slovaca, 18 (2012), 200-209.
  12. Gau J.T., Kinzel G.L.: An experimental investigation of the influence of the Bauschinger effect on springback predictions. J. Mat. Proc. Technol., 108 (2001), 369-375.
  13. Schmidt A., Kunibert G.S.: Design of adaptive finite element software. The finite element toolbox. Universitat Bremen, Bremen 2004.
  14. Banabic D.: Sheet metal forming processes. Constitutive modeling and numerical simulation. Springer, London 2010.
  15. Kardes Sever N., Mete O.H., Demiralp Y., Choi C., Altan T.: Springback prediction in bending of AHSS-DP-780. Proc. NAMRI/SME, vol. 40, 2012.

About this Article

Experimental and numerical analysis of springback prediction in U-bendings of anisotropic sheet metals

Ján Slota (1)
Miroslav Jurčišin (2)
Milan Dvořák (3)

(1) Technical University in Košice, Slovakia
(2) Technical University in Košice, Slovakia
(3) Technical University in Košice, Slovakia

85 (4/13)

Baushinger effect, bending, cyclic bending, springback





Publishing House of Rzeszow University of Technology Powstańców Warszawy 12, 35-959 Rzeszow

POLITECHNIKA RZESZOWSKA im. Ignacego Łukasiewicza; al. Powstańców Warszawy 12, 35-959 Rzeszów
tel.: +48 17 865 11 00, fax.: +48 17 854 12 60
Administrator serwisu:

Deklaracja dostępności | Polityka prywatności