Molecular dynamics modeling of ejecta production on shocked Pb surface

Ejecta emitting from the shocked metal surface is of current focus to engineering application and experimental diagnostics. This work is mainly dedicated to ejecta production of Pb surface with multiple grooves subjected to a triangular wave profile loading using molecular dynamics simulation. The solid and melted states upon shock or release for metal Pb are included. The simulations provide the ejecta volume distribution, total amount of ejected particles and ejecta size distribution, being in qualitative agreement with the experimental data and photon radiography images. These results will greatly contribute to the further understanding of physical mechanism and analyzing the experimental findings of ejecta process.