EXPERIMENTAL FLC DETERMINATION OF HIGH STRENGTH STEEL SHEET METAL

Authors

  • Ján Slota
  • Miroslav Jurčišin
  • Emil Spišák
  • Miroslav Tomáš
  • Marek Šiser

DOI:

https://doi.org/10.12776/ams.v21i4.639

Keywords:

material characterization, forming limit curve (FLC), forming process, high strength low alloy (HSLA) steels

Abstract

To assess formability in sheet forming, experimentally determined Forming Limit Curves (FLC) are often used. These conventional FLCs represent the forming limits (i.e. onset of necking) of a sheet material subjected to in-plane deformation or almost in-plane deformation. A widely used approach to experimentally determine the onset of necking of sheet material subjected to in-plane and almost in-plane deformation is formulated in ISO 12004. The aim of this work is to investigate limit strains for deep drawing quality sheet metal of HX180BD with nominal thickness 0.6 mm. The FLC curve has been measured by implementation of Nakajima test on universal testing machine Erichsen 145-60. The Nakajima test has been measured according to EN ISO 12004-2. Limit strains have been measured using 3D photogrammetric system ARAMIS by GOM. Forming limit curve was evaluated both the section method and the time dependent technique. The resulting experimental FLC curves were compared. With the time based method for the determination of FLC a greater strain values was achieved.

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Published

2015-12-31

How to Cite

Slota, J. ., Jurčišin, M. ., Spišák, E. ., Tomáš, M. ., & Šiser, M. . (2015). EXPERIMENTAL FLC DETERMINATION OF HIGH STRENGTH STEEL SHEET METAL. Acta Metallurgica Slovaca, 21(4), 269-277. https://doi.org/10.12776/ams.v21i4.639
Received 2019-05-28
Published 2015-12-31

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