Tension-Compression Tests for Springback Prediction of AHS Steel Using the Yoshida-Uemori Model


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In sheet metal formingprocess of automotive parts, springback effect is crucial, in particular, foradvanced high strength (AHS) steels. Most structural components of new vehiclesshow very complex shapes that require multi–step forming procedures.Therefore, finite element (FE)simulation has been often used to describe plasticdeformation behavior and springback occurrence of formed metal sheets.Recently, the kinematic hardening Yoshida–Uemorimodel has showed great capability for predicting elastic recovery of material. In this work, the AHSsteel grade JSC780Y wasinvestigated, in which tension–compressiontests were carried out. From resulted cyclic stress–strainresponses, material parameters were identified using different fitting methods.Determined model parameters were firstly verified by using simulations of 1–elementmodel. The most appropriate parameter set was thenobtained. Finally, a Hat-Shape forming test was performed and springback waspredicted and compared with experimental results.



Edited by:

Somrerk Chandra-ambhorn, Dr. Wanlop Harnnarongchai, Chantaraporn Phalakornkule, Prof. Piti Sukontasukkul and Mitsutoshi Ueda




W. Julsri et al., "Tension-Compression Tests for Springback Prediction of AHS Steel Using the Yoshida-Uemori Model", Key Engineering Materials, Vol. 728, pp. 78-84, 2017

Online since:

January 2017




* - Corresponding Author

[1] W. Gan, R.H. Wagoner, Die design method for sheet springback, Int. J. Mech. Sci. 46 (2004) 1097–113.

[2] P.G. Hodge, A new method of analyzing stresses and strains in work hardening solids, Transactions of ASME, J. App. Mech. 24 (1957) 482–3.

[3] L. Geng, R.H. Wagoner, Springback analysis with a modified hardening model, SAE paper No. 2000–01–0768.

DOI: https://doi.org/10.4271/2000-01-0768

[4] F. Yoshida, T. Uemori, A model of large–strain cyclic plasticity describing the Bauschinger effect and work hardening stagnation, Int. J. Plast. 18 (2002) 661–686.

DOI: https://doi.org/10.1016/s0749-6419(01)00050-x

[5] F. Yoshida, T. Uemori, A model of large-strain cyclic plasticity and its application to springback simulation, Int. J. Mech. Sci. 45 (2003) 1687–702.

DOI: https://doi.org/10.1016/j.ijmecsci.2003.10.013

[6] P.A. Eggertsen, K. Mattiasson, On constitutive modeling of the bending-unbending behaviour for accurate springback predictions, Int. J. Mech. Sci. 51 (2009) 547–563.

DOI: https://doi.org/10.1016/j.ijmecsci.2009.05.007

[7] O.E. Mattiasson, B.K. Enqvist, Identification of material hardening parameters by the three-point bending of metal sheets, Int. J. Mech. Sci. 48 (2006) 1525–1532.

DOI: https://doi.org/10.1016/j.ijmecsci.2006.05.009

[8] F. Yoshida, M. Urabe, V.V. Toropov, Identification of material parameters in constitutive model for sheet metals from cyclic bending tests, Int. J. Mech. Sci. 40 (1998) 237–249.

DOI: https://doi.org/10.1016/s0020-7403(97)00052-0

[9] P.A. Eggertsen, K. Mattiasson, On constitutive modeling of springback analysis, Int. J. Mech. Sci. 52 (2010) 804–818.

[10] LS–DYNA, Keyword User's Manual Version 971 Vol. 2: Material Models, Livermore Software Technology Corporation, California, USA, (2007).

[11] B. Chongthairungruang, V. Uthaisangsuk, S. Suranuntchai, S. Jiratheranat, Springback prediction in sheet metal forming of high strength steels. Mater. Design 50 (2013) 253–266.

DOI: https://doi.org/10.1016/j.matdes.2013.02.060