This is a simplified implementation of the Johnson-Cook model using basic stress-strain data. The Johnson-Cook model applies only to plastic deformation behavior above the yield point. For accurate material modeling in high strain rate applications, experimental characterization at various strain rates and temperatures is essential.
Methodology based on: Vasu Kumar Reddy Sirigiri, Vinith Yadav Gudiga, Uday Shankar Gattu, G. Suneesh, Krishna Mohan Buddaraju, "A review on Johnson Cook material model", Materials Today: Proceedings, Volume 62, Part 6, 2022, Pages 3450-3456, ISSN 2214-7853, https://doi.org/10.1016/j.matpr.2022.04.279
Note: The calculated parameters provide an initial approximation and should be validated against experimental data.