Plate impact experiments and simulation on porous graphite

We present some plate impact experiments on a commercial grade of graphite. The dynamic loadings range between 0.3 and 14 GPa under shock, and reach 23 GPa under reshock in the samples, which were approximately 20% porous and macroscopically isotropic. Material velocity at the sample rear surface is...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 500; no. 18; pp. 182016 - 6
Main Authors Hébert, D, Seisson, G, Bertron, I, Chevalier, J M, Thessieux, C, Quessada, J H, Tastet, S
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.01.2014
Subjects
Computational fluid dynamics
Computer simulation
Fluid flow
Graphite
Interferometers
Isotropic material
Loads (forces)
Physics
Plate impact tests
Porosity
Porous materials
Simulation
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Summary:We present some plate impact experiments on a commercial grade of graphite. The dynamic loadings range between 0.3 and 14 GPa under shock, and reach 23 GPa under reshock in the samples, which were approximately 20% porous and macroscopically isotropic. Material velocity at the sample rear surface is measured and recorded optically with Visar or Perrot-Fabry interferometers. These experimental results are then compared to hydrodynamic simulations, where we use a model that takes porosity into account. Our model is also compared to previously published experimental data. The overall agreement is good.
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ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/500/18/182016