Abstract
Recently, Richtmyer-Meshkov instabilities (RMI) have been used for studying strength at strain rates up to at least 107/s. RMI experiments involve shocking a metal interface with sinusoidal perturbations that invert and grow subsequent to shock and may arrest because of strength effects. To use RMI strength estimates as calibration data for rate-dependent constitutive models, one must understand the strain rates that apply to the strength estimate, but the strain rate varies spatially and temporally during the instability. In this study, we use a series of numerical simulations to establish the strain rate(s) to which the instability is most sensitive.
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Prime, M.B. (2018). Strain Rate Sensitivity of Richtmyer-Meshkov Instability Experiments for Metal Strength. In: Kimberley, J., Lamberson, L., Mates, S. (eds) Dynamic Behavior of Materials, Volume 1. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-62956-8_3
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DOI: https://doi.org/10.1007/978-3-319-62956-8_3
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