CONSTITUTIVE-EQUATIONS FOR ANNEALED AND EXPLOSIVELY SHOCKED IRON FOR APPLICATION TO HIGH-STRAIN RATES AND LARGE STRAINS

A constitutive model has been determined for annealed and explosively shocked iron for application to very high strain rates and large strains. The model is based on that of Armstrong and Zerilli but with modified temperature dependence. The data shows an excellent fit to this model and has good predictive capabilities. The effect of explosive shock although having a very large effect on properties requires a simple modification to the model to give the same degree of fit and predictive capabilities as that for annealed material.