Characterization of the flow behavior of deep drawing steel grades in dependency of the stress state and its impact on fea

Material behaviour and formability: F. Barlat, D. Banabic, O.Cazacu, T. Kuwabara, L. Delannay
First Online:

Abstract

In numerical simulation the flow behavior of the material is described by the flow curve under uniaxial stress condition. As within the tensile test experimental values can only be determined up to low strains, further experiments are applied in order to obtain higher strains. The alternative experiments are generally carried out under different stress conditions in comparison to the stress condition of the tensile test. Within this paper the differences in flow behavior under the respective stress conditions are figured out. Apart from the optical strain analysis of the tensile test after the onset of necking, the bulge test and the layer compression test are applied. Furthermore the work hardening of materials under different test conditions is compared.

Keywords

Flow behavior Stress condition Deep drawing steel grades 
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References

  1. 1.
    Roll K (2008) Simulation of sheet metal forming – necessary developments in the future. Proc. of Numisheet Conference, Interlaken, Switzerland, pp 3-11Google Scholar
  2. 2.
    Prüf- und Dokumentationsrichtlinie für die mechani-schen Kennwerte von Feinblechen (PuD-S), 2004Google Scholar
  3. 3.
    Bleck W, Engl B, Frehn A, Nicklas D, Stein- beck G (2004) Ermittlung von Berechnungskennwerten an Karosseriewerkstoffen. Bericht über ein Gemein- schaftsprojekt der Stahl- und Automobilindustrie. In Materialwissenschaften und Werkstofftechnik, 35, No.8Google Scholar
  4. 4.
    Merklein M (2006) Charakterisierung von Blechwerk- stoffen für den Leichtbau. Meisenbach-Verlag, BambergGoogle Scholar
  5. 5.
    Gologranc F (1975) Beitrag zur Ermittlung von Fließ- kurven im kontinuierlichen hydraulischen Tiefungs- versuch. Berichte aus dem Institut für Umformtech- nik der Universität Stuttgart. Verlag Giradet, StuttgartGoogle Scholar
  6. 6.
    Nock, M.: Biegeumformen mit Elastomer- werkzeugen. Modellierung, Prozessauslegung und Abgrenzung des Verfahrens am Beispiel des Rohrbiegens. Meisenbach-Verlag, Bamberg, 2005Google Scholar
  7. 7.
    Hoffmann H, Vogl C (2003) Determination of True Stress-Strain-Curves and Normal Anisotropy in Tensile Test with Optical Deformation Measurement. In Annals of the CIRP 52/1:217CrossRefGoogle Scholar

Copyright information

© Springer/ESAFORM 2009

Authors and Affiliations

  1. 1.Chair of Manufacturing TechnologyUniversity ErlangenErlangenGermany

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