Electrical conduction of granular media: Experimental and numerical studies

Junghwoon Lee, Tae Sup Yun

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This study presents the evolutionary behavior of electrical conduction for granular mixtures dominated by the volumetric fraction of each constituent, relative sizes, and stress condition. The chrome balls and glass beads are mixed with varying volumetric fraction and relative size ratio. The two-electrode method is used to obtain electrical conductance at different loading stages for each mixture. Three relative sizes of glass beads with respect to chrome balls are tested. As the size ratio determines the spatial configuration and corresponding connectivity of conductive granules in mixtures, the electrical conductance shows the unique evolution with varying volumetric fraction. The discrete element method is also implemented to capture the inter-particle connectivity of conductive granules. Experimental results and numerical simulation conclude that not only the fraction of conductive particles but also long range of interconnectivity of particles construct the electrical percolation path that enables carrying the electric current. This study highlights that energy transfer in granular packing can be optimized by controlling suggested dominant factors.

Original languageEnglish
Title of host publicationGeoCongress 2012
Subtitle of host publicationState of the Art and Practice in Geotechnical Engineering
Pages2362-2371
Number of pages10
Edition225 GSP
DOIs
Publication statusPublished - 2012 Dec 1
EventGeoCongress 2012: State of the Art and Practice in Geotechnical Engineering - Oakland, CA, United States
Duration: 2012 Mar 252012 Mar 29

Publication series

NameGeotechnical Special Publication
Number225 GSP
ISSN (Print)0895-0563

Other

OtherGeoCongress 2012: State of the Art and Practice in Geotechnical Engineering
CountryUnited States
CityOakland, CA
Period12/3/2512/3/29

Fingerprint

granular medium
connectivity
Glass
glass
Electric currents
Finite difference method
Energy transfer
discrete element method
electrode
Electrodes
Computer simulation
simulation
energy
particle

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

Cite this

Lee, J., & Yun, T. S. (2012). Electrical conduction of granular media: Experimental and numerical studies. In GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering (225 GSP ed., pp. 2362-2371). (Geotechnical Special Publication; No. 225 GSP). https://doi.org/10.1061/9780784412121.242
Lee, Junghwoon ; Yun, Tae Sup. / Electrical conduction of granular media : Experimental and numerical studies. GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering. 225 GSP. ed. 2012. pp. 2362-2371 (Geotechnical Special Publication; 225 GSP).
@inproceedings{08f14bd2f820419b95fda8c1a7347054,
title = "Electrical conduction of granular media: Experimental and numerical studies",
abstract = "This study presents the evolutionary behavior of electrical conduction for granular mixtures dominated by the volumetric fraction of each constituent, relative sizes, and stress condition. The chrome balls and glass beads are mixed with varying volumetric fraction and relative size ratio. The two-electrode method is used to obtain electrical conductance at different loading stages for each mixture. Three relative sizes of glass beads with respect to chrome balls are tested. As the size ratio determines the spatial configuration and corresponding connectivity of conductive granules in mixtures, the electrical conductance shows the unique evolution with varying volumetric fraction. The discrete element method is also implemented to capture the inter-particle connectivity of conductive granules. Experimental results and numerical simulation conclude that not only the fraction of conductive particles but also long range of interconnectivity of particles construct the electrical percolation path that enables carrying the electric current. This study highlights that energy transfer in granular packing can be optimized by controlling suggested dominant factors.",
author = "Junghwoon Lee and Yun, {Tae Sup}",
year = "2012",
month = "12",
day = "1",
doi = "10.1061/9780784412121.242",
language = "English",
isbn = "9780784412121",
series = "Geotechnical Special Publication",
number = "225 GSP",
pages = "2362--2371",
booktitle = "GeoCongress 2012",
edition = "225 GSP",

}

Lee, J & Yun, TS 2012, Electrical conduction of granular media: Experimental and numerical studies. in GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering. 225 GSP edn, Geotechnical Special Publication, no. 225 GSP, pp. 2362-2371, GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering, Oakland, CA, United States, 12/3/25. https://doi.org/10.1061/9780784412121.242

Electrical conduction of granular media : Experimental and numerical studies. / Lee, Junghwoon; Yun, Tae Sup.

GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering. 225 GSP. ed. 2012. p. 2362-2371 (Geotechnical Special Publication; No. 225 GSP).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Electrical conduction of granular media

T2 - Experimental and numerical studies

AU - Lee, Junghwoon

AU - Yun, Tae Sup

PY - 2012/12/1

Y1 - 2012/12/1

N2 - This study presents the evolutionary behavior of electrical conduction for granular mixtures dominated by the volumetric fraction of each constituent, relative sizes, and stress condition. The chrome balls and glass beads are mixed with varying volumetric fraction and relative size ratio. The two-electrode method is used to obtain electrical conductance at different loading stages for each mixture. Three relative sizes of glass beads with respect to chrome balls are tested. As the size ratio determines the spatial configuration and corresponding connectivity of conductive granules in mixtures, the electrical conductance shows the unique evolution with varying volumetric fraction. The discrete element method is also implemented to capture the inter-particle connectivity of conductive granules. Experimental results and numerical simulation conclude that not only the fraction of conductive particles but also long range of interconnectivity of particles construct the electrical percolation path that enables carrying the electric current. This study highlights that energy transfer in granular packing can be optimized by controlling suggested dominant factors.

AB - This study presents the evolutionary behavior of electrical conduction for granular mixtures dominated by the volumetric fraction of each constituent, relative sizes, and stress condition. The chrome balls and glass beads are mixed with varying volumetric fraction and relative size ratio. The two-electrode method is used to obtain electrical conductance at different loading stages for each mixture. Three relative sizes of glass beads with respect to chrome balls are tested. As the size ratio determines the spatial configuration and corresponding connectivity of conductive granules in mixtures, the electrical conductance shows the unique evolution with varying volumetric fraction. The discrete element method is also implemented to capture the inter-particle connectivity of conductive granules. Experimental results and numerical simulation conclude that not only the fraction of conductive particles but also long range of interconnectivity of particles construct the electrical percolation path that enables carrying the electric current. This study highlights that energy transfer in granular packing can be optimized by controlling suggested dominant factors.

UR - http://www.scopus.com/inward/record.url?scp=84888318002&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84888318002&partnerID=8YFLogxK

U2 - 10.1061/9780784412121.242

DO - 10.1061/9780784412121.242

M3 - Conference contribution

AN - SCOPUS:84888318002

SN - 9780784412121

T3 - Geotechnical Special Publication

SP - 2362

EP - 2371

BT - GeoCongress 2012

ER -

Lee J, Yun TS. Electrical conduction of granular media: Experimental and numerical studies. In GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering. 225 GSP ed. 2012. p. 2362-2371. (Geotechnical Special Publication; 225 GSP). https://doi.org/10.1061/9780784412121.242