The effect of initial pressed density on the dynamic densification behavior of brittle granular materials

Autor: Justin W. Steiner, Travis J. Voorhees, Naresh N. Thadhani, Gregory Kennedy, D. Anthony Fredenburg
Rok vydání: 2020
Předmět:
Zdroj: SHOCK COMPRESSION OF CONDENSED MATTER - 2019: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter.
ISSN: 0094-243X
DOI: 10.1063/12.0000981
Popis: The effect of bulk initial density (ρ00) on the dynamic densification behavior of a brittle granular system, cerium dioxide (CeO2), is investigated. Specifically, the consolidation behavior of pressed powder compacts at three initial bulk densities, 33, 55, and 63% of theoretical maximum density (TMD), is examined at shock compressed densities within the compaction range via gas gun driven plate-on-plate impact experiments. The shock Hugoniot data collected from these experiments are presented and used to calibrate P-α compaction models. The dependency of these P-α model parameters on initial density are presented and discussed, particularly with their relevance to being used in a predictive manner.
Databáze: OpenAIRE