Simulation of the Shock-Induced Phase Transition and Spall of Cerium

Abstract.: Z-cut quartz flyer was accelerated by a power gun to impact on cerium sample to study the shock-induced isostructural transition and spallation, The free surface velocity profile was successfully obtained with DPS technique. Two-phase equations of state for cerium were constructed based on first-principles calculations. A previous dynamic micro-void nucleation and growth model and a newly-proposed phenomenal phase transition model were applied to simulate the experiments, the simulated free surface velocity profiles agree with experimental lines very well 1