Data for "Effect of Grain Shape and Relative Humidity on the Nonlinear Elastic Properties of Granular Media"

This study focuses on unraveling the microphysical origins of the nonlinear elastic effects, which are pervasive in the Earth’s crust. Here, we examine the influence of grain shape and relative humidity (RH) on the elastic nonlinearity of granular assemblies made of spherical glass beads and angular sand particles. We find that their elastic nonlinearity is of the same order of magnitude. However, while the elastic nonlinearity of glass beads increases with RH, that of sand particles is rather RH independent. We attribute this difference to the angularity of sand particles; absorbed water on the spherical grains weakens the junctions making them more nonlinear, while no such effect occurs in sand due to grain interlocking. Additionally, for one of the nonlinear parameters that likely arises from shearing/partial slip of the grain junctions, we observe a sharp amplitude threshold in sand which is not observed in glass beads.

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  • Figures.zip

    size: 2.59 MB | mime_type: application/zip | date: 2022-11-18 | sha256: 0e7ed3b

  • Glass bead samples.zip

    size: 15.5 GB | mime_type: application/zip | date: 2022-11-17 | sha256: 95771b8

  • Sand samples .zip

    size: 26.3 GB | mime_type: application/zip | date: 2022-11-17 | sha256: 53ef2dd

Metadata

Work Title Data for "Effect of Grain Shape and Relative Humidity on the Nonlinear Elastic Properties of Granular Media"
Access
Open Access
Creators
  1. Linying Gao
  2. Jacques Riviere
  3. Parisa Shokouhi
Keyword
  1. Nonlinear elasticity
  2. Relative humidity
  3. Grain shape
  4. Granular media
  5. Ultrasonics
License In Copyright (Rights Reserved)
Work Type Dataset
Acknowledgments
  1. The authors would like to thank Chris Marone for his help with the loading apparatus and many helpful discussions, Steve Swavely for technical support, and David C. Bolton, Srisharan Shreedharan, Clay Wood and Raphael Affinito for their help with operating the loading apparatus. This work was partially supported by a grant from the U.S. Department of Energy, Office of Basic Energy Sciences (Award Number DE-SC0017585) to PS.
Publication Date November 2022
Language
  1. English
DOI doi:10.26207/ppqc-7d70
Related URLs
Deposited November 16, 2022

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Work History

Version 1
published

  • Created
  • Updated
  • Updated Acknowledgments Show Changes
    Acknowledgments
    • The authors would like to thank Chris Marone for his help with the loading apparatus and many helpful discussions, Steve Swavely for technical support, and David C. Bolton, Srisharan Shreedharan, Clay Wood and Raphael Affinito for their help with operating the loading apparatus. This work was partially supported by a grant from the U.S. Department of Energy, Office of Basic Energy Sciences (Award Number DE-SC0017585) to PS.
  • Added Creator Linying Gao
  • Added Creator Jacques Riviere
  • Added Creator Parisa Shokouhi
  • Updated License Show Changes
    License
    • https://rightsstatements.org/page/InC/1.0/
  • Updated Publisher's Statement Show Changes
    Publisher's Statement
    • The [type of data] data used for [brief context, description] in the study are available at Penn State University’s Scholar Sphere via [DOI, persistent identifier link] with all rights reserved.
  • Added Figures.zip
  • Added Sand samples .zip
  • Added Glass bead samples.zip
  • Updated Publication Date Show Changes
    Publication Date
    • 2022-11
  • Deleted Figures.zip
  • Added Figures.zip
  • Updated Description Show Changes
    Description
    • This study focuses on unraveling the microphysical origins of the nonlinear elastic effects in granular media. Previous work has shown that the nonlinear elastic response of consolidated granular media like rocks likely arises from two distinct mechanisms related to opening/closing and shearing of the grain junctions. Here, we examine the influence of grain shape and relative humidity (RH) on the elastic nonlinearity of granular assemblies made of spherical glass beads and angular sand particles. We find that their elastic nonlinearity is of the same order of magnitude, however their dependence to RH differs greatly. While the elastic nonlinearity of spherical glass beads increases with RH, that of angular sand particles is rather RH independent. We attribute this difference to the angularity of sand particles. although angular grains show a much weaker dependence on relative humidity changes. This could suggest that despite slightly weaker junctions, grain angularity hinders sliding. We also observe a possible amplitude threshold at which grain junctions unlock and where sliding or partial slip occurs.
    • This study focuses on unraveling the microphysical origins of the nonlinear elastic effects, which are pervasive in the Earth’s crust. Here, we examine the influence of grain shape and relative humidity (RH) on the elastic nonlinearity of granular assemblies made of spherical glass beads and angular sand particles. We find that their elastic nonlinearity is of the same order of magnitude. However, while the elastic nonlinearity of glass beads increases with RH, that of sand particles is rather RH independent. We attribute this difference to the angularity of sand particles; absorbed water on the spherical grains weakens the junctions making them more nonlinear, while no such effect occurs in sand due to grain interlocking. Additionally, for one of the nonlinear parameters that likely arises from shearing/partial slip of the grain junctions, we observe a sharp amplitude threshold in sand which is not observed in glass beads.
  • Published
  • Updated Work Title, Related URLs Show Changes
    Work Title
    • Effect of Grain Shape and Relative Humidity on the Nonlinear Elastic Properties of Granular Media
    • Data for "Effect of Grain Shape and Relative Humidity on the Nonlinear Elastic Properties of Granular Media"
    Related URLs
    • https://doi.org/10.1029/2023GL103245