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http://dx.doi.org/10.3740/MRSK.2017.27.1.19

Differences on Tension, Compression JC Constitutive Equation Parameter of Strain Rate Effect for Ti-6Al-4V  

Woo, Sang-Hyun (Weapon Systems Engineering, Korea University of Science and Technology (UST))
Lee, Chang-Soo (The 4th Research and Development Institute, Agency for Defense Development)
Park, Lee-Ju (Weapon Systems Engineering, Korea University of Science and Technology (UST))
Publication Information
Korean Journal of Materials Research / v.27, no.1, 2017 , pp. 19-24 More about this Journal
Abstract
This paper is concerned with a test method that can be used to investigate the parameters of the Johnson-Cook constitutive model. These parameters are essential for accurately analyzing material behavior under impact loading conditions in numerical simulation. Ti-6Al-4V alloy (HCP crytal structure) was used as a specimen for the experiments. In the $10^{-3}-10^3/s$ strain rate range, three types of experimental methods (convention, compression and tension) were employed to compare the differences using MTS-810, SHPB and SHTB. Finite element analysis results when applying these parameters were displayed along with the experiment results.
Keywords
srain rate; SHPB; SHTB; JC constitutive parameter;
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