Crash analysis of thin-walled structures with an elasto-plastic explicit finite element method

To evaluate the crash-worthiness of a car, the dynamic response of auto-body components has to be correctly simulated for various loading conditions. Simulation of thin-walled structures has been carried out by an elasto-plastic explicit finite element method with shell elements. The present algorithm adopts the plastic-predictor elastic-corrector (PPEC) scheme in stress integration in order to keep track of the stress-strain relation for the rate-dependent model accurately. Experimental results from both static and dynamic tests with the tension split Hopkinson bar apparatus are interpolated to construct the Johnson-Cook and a modified Johnson-Cook equation as a constitutive relation, that should be applied to simulation of the dynamic behavior of auto-body structures. Numerical simulations show remarkable difference in the reaction force and impact energy absorption between the static model and the dynamic model.
Publisher
TRANS TECH PUBLICATIONS LTD
Issue Date
2000
Language
ENG
Keywords

ONE-POINT QUADRATURE; STRAIN

Citation

ADVANCES IN ENGINEERING PLASTICITY, PTS 1-2 BOOK SERIES: KEY ENGINEERING MATERIALS, v.177-1, pp.212 - 12

ISSN
1013-9826
URI
http://hdl.handle.net/10203/3477
Appears in Collection
ME-Journal Papers(저널논문)
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