Hello All!!!
I am Arun, Master degree student in South Korea.
My research field is : High strain rate experiemnts
I did High speed tensile test for aluminium alloy at four different speeds (1m/s, 5m/s, 10m/s and 15m/s)
I also did high temp tensile test for aluminium alloy at room temperature, 100 C, 250C
Now i have the stress Vs Strain curve for High speed tensile test and high temperature test
But, i don't know how to determine Johnson-Cook model parameter from the experimental results
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