Document Type
Article
Publication Date
2014
Digital Object Identifier (DOI)
ttp://dx.doi.org/10.1088/1742-6596/500/17/172007
Abstract
Shock waves in the [110] and [111] directions of single-crystal Al samples were studied using molecular dynamics (MD) simulations. Piston-driven simulations were performed to investigate the split shock-wave regime. At low piston velocities, the material is compressed initially to a metastable over-compressed elastic state leading to a super-elastic single shock wave. This metastable elastic state later collapses to a plastic state resulting in the formation of a two-wave structure consisting of an elastic precursor followed by a slower plastic wave. The single two-zone elastic-plastic shock-wave regime appearing at higher piston velocities was studied using moving window MD. The plastic wave attains the same average speed as the elastic precursor to form a single two-zone shock wave. In this case, repeated collapse of the highly over-compressed elastic state near the plastic shock front produces ultrashort triangle pulses that provide the pressure support for the leading elastic precursor.
Rights Information
This work is licensed under a Creative Commons Attribution 3.0 License.
Was this content written or created while at USF?
Yes
Citation / Publisher Attribution
Journal of Physics: Conference Series, v. 500, art. 172007
Scholar Commons Citation
Zhakhovsky, Vasily V.; Inogamov, Nail A.; Demaske, Brian J.; Oleynik, Ivan I.; and White, Carter T., "Elastic-Plastic Collapse of Super-Elastic Shock Waves in Face-Centered-Cubic Solids" (2014). Physics Faculty Publications. 8.
https://digitalcommons.usf.edu/phy_facpub/8
