Shock consolidation response of CeO2 powders

Fredenburg, Anthony; Dennis-Koller, Darcie; Dattelbaum, Dana M.

doi:10.1063/1.3686564

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…5 with error bars reflecting the uncertainties previously discussed. The data reported in Table 2 retracts that from an earlier proceedings [8] as significant improvements in data analysis techniques have been made since the previous publication. From another, within the experimental uncertainties.…”

Section: High-strain-rate Compactioncontrasting

confidence: 47%

Configurational affects on the compaction response of CeO₂powders

Fredenburg

Dennis-Koller

Dattelbaum

2012

EPJ Web of Conferences

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Abstract. Initial configuration, which can include particle size and shape, initial density, and void location, can affect the measured compaction responses of initially porous materials. In this work, both the low-and high-strain-rate compaction response of several different morphology CeO 2 powders are investigated experimentally. Quasi-static compaction curves are found to exhibit distinct differences between the morphologies, where initial packing efficiencies and particle aspect ratios are found to dominate the low pressure response. At low-strain-rates, the largest particles with the highest aspect ratio are found to exhibit the stiffest response, while those that most resemble spherical particles offer the least resistance to initial densification. At highstrain-rates a transition in compliance is observed, where smaller equiaxed particles are found to exhibit greater resistances to densification. The role of particle morphology and its affect on the communication of particle-level stresses during quasi-static and dynamic densification are discussed, and emphasis is placed on the mechanisms that cause the morphology-based transition in compliance.

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Section: High-strain-rate Compactioncontrasting

confidence: 47%

Configurational affects on the compaction response of CeO₂powders

Fredenburg

Dennis-Koller

Dattelbaum

2012

EPJ Web of Conferences

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Weak shock compaction on granular salt

Seo,

Heatwole,

Feagin

et al. 2024

Sci Rep

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This study conducted integrated experiments and computational modeling to investigate the speeds of a developing shock within granular salt and analyzed the effect of various impact velocities up to 245 m/s. Experiments were conducted on table salt utilizing a novel setup with a considerable bore length for the sample, enabling visualization of a moving shock wave. Experimental analysis using particle image velocimetry enabled the characterization of shock velocity and particle velocity histories. Mesoscale simulations further enabled advanced analysis of the shock wave’s substructure. In simulations, the shock front’s precursor was shown to have a heterogeneous nature, which is usually modeled as uniform in continuum analyses. The presence of force chains results in a spread out of the shock precursor over a greater ramp distance. With increasing impact velocity, the shock front thickness reduces, and the precursor of the shock front becomes less heterogeneous. Furthermore, mesoscale modeling suggests the formation of force chains behind the shock front, even under the conditions of weak shock. This study presents novel mesoscale simulation results on salt corroborated with data from experiments, thereby characterizing the compaction front speeds in the weak shock regime.

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High Energy Rate Forming

2013

SOSEI-TO-KAKOU

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Shock consolidation response of CeO2 powders

Cited by 3 publications

References 7 publications

Configurational affects on the compaction response of CeO₂powders

Configurational affects on the compaction response of CeO₂powders

Weak shock compaction on granular salt

High Energy Rate Forming

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Shock consolidation response of CeO2 powders

Cited by 3 publications

References 7 publications

Configurational affects on the compaction response of CeO2powders

Configurational affects on the compaction response of CeO2powders

Weak shock compaction on granular salt

High Energy Rate Forming

Contact Info

Product

Resources

About

Configurational affects on the compaction response of CeO₂powders

Configurational affects on the compaction response of CeO₂powders