Simulations of a Gold Rod into Borosilicate Glass Using Experimentally Determined Constitutive Constants

Abstract

Simulations of reverse ballistic experiments of a gold rod into borosilicate glass [1] were never revisited using constitutive constants from independent, laboratory characterization experiments. Prior to comparing simulation results against the experimental results, the experimental data were re-analyzed under different assumptions. This provides some sense of the uncertainty in the experimental results. It is also demonstrated that the assumed equation of state for borosilicate glass can have a significant effect on the computational results. Finally, it is demonstrated that the simulations, where it is assumed that the gold rod penetrates failed material, reproduces the experimental results within the uncertainties of the experiments, except at low impact velocities where the details of glass failure, that is, the transition of intact to failed material, are important.