Data are presented describing refined simulations of perturbation growth in a three-layer cylindrical liner system tested with disk explosive magnetic flux compression generators (DEMGs) to study the strength properties of copper and polyethylene at shocklessly applied pressures of up to similar to 15 GPa. The calculated performance for the same liner system in the experiments to study the strength properties of copper at shockless loading of up to similar to 40-GPa pressures is presented. The feasibility of similar strength experiments with quasi-isentropic material compression to similar to 2000 GPa using DEMGs is demonstrated.