Modeling of mechanical behavior of brass at high strain rates

摘要

The mechanical behaviors of most metals are dependent on strain rate and temperature. The Split Hopkinson Bar experimental technique is widely used to study the stress-strain behavior of materials at high strain rates. Such deformation processes can be considred essentially adiabatic, as there is insufficient time for the heat generated by the plastic deformation to be conducted away. Thus an adiabatic temperature rise is produced during the high-strain-rate loading process and will result in thermal softening phenomenon.