The Dynamic Compaction of Sand and Related Porous Systems

Proud, W. G.; Chapman, David J.; Williamson, David M.; Tsembelis, K.; Addiss, John; Bragov, A. M.; Lomunov, A. K.; Cullis, I.G.; Church, P.; Gould, Peter; Porter, David; Cogar, John; Borg, John P.

doi:10.1063/1.2832988

Cited by 10 publications

(10 citation statements)

References 13 publications

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“…In [6], the two-phase model used could successfully describe stress gauge histories of dry and hydrated sand in the 1 to 20 GPa stress range.…”

Section: A C C E P T E D Article In Pressmentioning

confidence: 99%

“…Experimental data established on the dynamic behaviour of sand can compare favourably [1] [2] [3] or with a larger scatter [4]. In the last case, differences are attributed to the wide variety of grain sizes and chemical compositions displayed by this material and/or the difficulties in testing granular materials, especially with gauge assemblies [3] [5] [6].…”

Section: Introductionmentioning

confidence: 99%

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Dynamic behaviour of dry and water-saturated sand under planar shock conditions

Arlery

Gardou

Fleureau

et al. 2010

International Journal of Impact Engineering

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. Dynamic behaviour of dry and water-saturated sand under planar shock conditions. International Journal of Impact Engineering, Elsevier, 2009, 37 (1), pp. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. M A N U S C R I P T A C C E P T E D ARTICLE IN PRESS ___________________________________________________________________________ AbstractPlane shock wave experiments were performed on dry and partially water-saturated sand, using three water contents, in order to validate predictive models of material behaviour at stress levels between 1 and 10 GPa. Gas and powder guns were used to load the sample under uni-axial strain conditions at low and high stress levels, respectively. Wave motions were detected by piezoelectric pins in the samples and a VISAR (Velocity Interferometer System for Any Reflector) recorded the free surface velocity on the back target. This study presents both experimental and simulated results. Experimental data are used to determine shock Hugoniot states. Significant differences are observed in the dynamic response of the materials under various water-saturated conditions, and are reproduced with good agreement by numerical simulations using the ARMORS (A Rheological MOdel of Rocks Saturated) model.

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“…In [6], the two-phase model used could successfully describe stress gauge histories of dry and hydrated sand in the 1 to 20 GPa stress range.…”

Section: A C C E P T E D Article In Pressmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamic behaviour of dry and water-saturated sand under planar shock conditions

Arlery

Gardou

Fleureau

et al. 2010

International Journal of Impact Engineering

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“…These processes are vital for understanding large-scale shock events, such as asteroid collisions and detonations, and are instrumental in defending against them. A great deal of experimental research into the bulk response of granular materials, especially ceramics and sand, currently exists [1][2][3][4][5][6]. However, the high strain-rates and short timescales involved in shock compaction have made experimental work into granular dynamics challenging.…”

Section: Introductionmentioning

confidence: 99%

Mesoscale simulations of shock compaction of a granular ceramic: effects of mesostructure and mixed-cell strength treatment

Derrick

LaJeunesse

Davison

et al. 2018

Modelling Simul. Mater. Sci. Eng.

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The shock response of granular materials is important in a variety of contexts but the precise dynamics of grains during compaction is poorly understood. Here we use 2D mesoscale numerical simulations of the shock compaction of granular tungsten carbide to investigate the effect of internal structure within the particle bed and 'stiction' between grains on the shock response. An increase in the average number of contacts with other particles, per particle, tends to shift the Hugoniot to higher shock velocities, lower particle velocities and lower densities. This shift is sensitive to inter-particle shear resistance. Eulerian shock physics codes approximate friction between, and interlocking of, grains with their treatment of mixed cell strength (stiction) and here we show that this has a significant effect on the shock response. When studying the compaction of particle beds it is not common to quantify the pre-compaction internal structure, yet our results suggest that such differences should be taken into account, either by using identical beds or by averaging results over multiple experiments.

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“…An introduction to the problems associated with the description of these materials can be found in the review by Behringer [1]. The present author produced a review of the mechanical response of quartz sand [2] considering aspects of particle size and saturation; this paper should be read alongside this review in order to provide a wider overview of the response of quartz sand. Other papers dealing with this particular sand type can be found in these proceedings [3,4], while several presentations at this conference addressed Hugioniot measurements of a range of materials [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…In previous publications [2] the rise time of the shock wave combined with the shock velocity was used to estimate the physical thickness of the shock front. At low shock stresses (~3 GPa) the thickness associated with the shock front was ~4 particles thick and this reduced with increasing shock stress to become ~2 particles thick at applied stresses of 19 GPa.…”

Section: Introductionmentioning

confidence: 99%

The stress and ballistic properties of granular materials

Proud

Chapman

Eakins

2017

AIP Conference Proceedings

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Abstract. Granular materials are widespread in nature and in manufacturing. Their particulate nature gives a compressive strength of a similar order of magnitude as many continuous solids, a vanishingly small tensile strength and variable shear strength, highly dependent on the loading conditions. Previous studies have shown the effect of composition, morphology and particle size, however, compared to metals and polymers, granular materials are not so well understood. This paper will present some recent results for granular materials, placing these within the wider context. Two areas will be dealt with (i) the effect of the skeletal strength of the material and (ii) the displacements associated with ballistic impact. One clear observation is the similarity of behavior of quartz-sands in compression across a range of particle size. However, the precise pathway of compression is strongly dependent on the initial conditions e.g. density and connectivity within the granular bed, as emphasized by some data for quasi-static compression of sand. To fully embrace the range of behaviours seen requires the development of a suitable parameter to describe the material, the paper concludes with a discussion of one of those approaches.

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The Dynamic Compaction of Sand and Related Porous Systems

Cited by 10 publications

References 13 publications

Dynamic behaviour of dry and water-saturated sand under planar shock conditions

Dynamic behaviour of dry and water-saturated sand under planar shock conditions

Mesoscale simulations of shock compaction of a granular ceramic: effects of mesostructure and mixed-cell strength treatment

The stress and ballistic properties of granular materials

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