Modified Johnson-Cook model for vehicle body crashworthiness simulation

Cited 40 time in webofscience Cited 0 time in scopus
  • Hit : 613
  • Download : 193
Dynamic response prediction of vehicle bodies is important for vehicle crashworthiness evaluation. The dynamic behaviour of vehicle body materials is dependent on material strain rates. One of the typical high strain rate tensile tests is the split Hopkinson bar test. In this paper, experiments have been conducted based on a new split Hopkinson bar apparatus specially designed for the dynamic tensile test of sheet metals. Results from both quasistatic and dynamic tests show that the strain rate hardening effect for sheet metals cannot be described by the original Johnson-Cook constitutive relation. This relation has been modified to include a higher-order term for the hardening effect. The modified constitutive relation represents a more accurate simulation than the original model for the dynamic behaviour of vehicle body structures.
Publisher
INDERSCIENCE ENTERPRISES LTD
Issue Date
1999
Language
ENG
Article Type
Article
Keywords

STRAIN; RATES; BAR

Citation

INTERNATIONAL JOURNAL OF VEHICLE DESIGN, v.21, no.4, pp.424 - 435

ISSN
0143-3369
URI
http://hdl.handle.net/10203/2501
Appears in Collection
ME-Journal Papers(저널논문)
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 40 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0