Investigation of S-D effect on plastic flow behavior of Armox 500T steel

Abstract

Quasi-static compression and tensile tests were conducted on Armox 500T steel in the range of strain rates from 10−4 to 10−1 s−1 to evaluate strength differential (S-D) effect. Dynamic flow behavior under compressive loading conditions at strain rates of 102–103 s−1 was measured by conducting a series of tests on split-Hopkinson pressure bar setup. Further, J–C material model parameters have been established considering static and dynamic compression test data at strain rates of 10−3–103 s−1. Subsequently, FE modeling was carried out to validate J–C material model parameters and compared with the set of previous studies. The comparative study revealed the presence of S-D effect on the plastic flow behavior of the test material. Strain–time pulse as well as stress–strain response of Armox 500T steel obtained from simulation had a good agreement with the experimental results. The data generated from the present work will be helpful in the design and development of armor vehicles and other military structures against different threat scenarios.