Modification of the Johnson-Cook constitutive model for 34CrNi3MoA alloy steel based on the temperature-strain rate coupling effect
This work examines the high-rate compression response of 34CrNi3MoA alloy steel by means of SHPB tests carried out at 25 °C, 200 °C, 400 °C and 600 °C, with strain rates ranging from 1000 to 4600 s⁻¹. The experimental curves indicate rate strengthening, thermal softening and a local stress increase related to dynamic s...