Simulations of the inelastic response of silicon to shock compression

PG Stubley and A Higginbotham and JS Wark, COMPUTATIONAL MATERIALS SCIENCE, 128, 121-126 (2017).

DOI: 10.1016/j.commatsci.2016.11.006

Recent experiments employing nanosecond white-light X-ray diffraction have demonstrated a complex response of pure, single crystal silicon to shock compression on ultra-fast timescales. We present here details of a Lagrangian code which tracks both longitudinal and transverse strains, and successfully reproduces the experimental response by incorporating a model of the shock-induced, yet kinetically inhibited, phase transition. This model is also shown to reproduce results of classical molecular dynamics simulations of shock compressed silicon. (C) 2016 Published by Elsevier B.V.

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