Study on the characterization of the dynamic material properties of sheet metal for auto-body considering the pre-strain effect

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 258
  • Download : 833
Most parts of auto-body are produced through the sheet metal forming process, and during this process they have change of thickness and residual stress and strain remain. In this paper, to specify dynamic material properties considering this pre-strain effect, materials SPCEN, SPRC45E and SPRC35R were selected and were imposed 5, 10% pre-strains. After that using the high speed material testing machine, materials were tested at given strain rates of between 0.003 and 50 s-1. It was found from experimental results that in case of SPCEN and SPRC35R, the yield stress and ultimate stress were increased due to pre-strain effect at strain of over 10 s-1 but SPRC45E was not affected by pre-strain effect.
Issue Date
2003
Keywords

Pre-strain effect; Strainrates; High speed material testing machine

Citation

proc. KSAE Fall Conference, Vol.2, pp.1513~1518

URI
http://hdl.handle.net/10203/19488
Appears in Collection
ME-Conference Papers(학술회의논문)
Files in This Item
CK93.pdf(385.85 kB)Download

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0