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Title: Linking initial microstructure and local response during quasistatic granular compaction

Abstract

In this study, we performed experiments combining three-dimensional x-ray diffraction and x-ray computed tomography to explore the relationship between microstructure and local force and strain during quasistatic granular compaction. We found that initial void space around a grain and contact coordination number before compaction can be used to predict regions vulnerable to above-average local force and strain at later stages of compaction. We also found correlations between void space around a grain and coordination number, and between grain stress and maximum interparticle force, at all stages of compaction. Finally, we observed grains that fracture to have an above-average initial local void space and a below-average initial coordination number. In conclusion, our findings provide (1) a detailed description of microstructure evolution during quasistatic granular compaction, (2) an approach for identifying regions vulnerable to large values of strain and interparticle force, and (3) methods for identifying regions of a material with large interparticle forces and coordination numbers from measurements of grain stress and local porosity.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Physical and Life Sciences
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1406424
Alternate Identifier(s):
OSTI ID: 1372578
Report Number(s):
LLNL-JRNL-725572
Journal ID: ISSN 2470-0045; PLEEE8
Grant/Contract Number:
AC52-07NA27344; AC02-06CH11357; 17-LW-009; 16-ERD-010
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review E
Additional Journal Information:
Journal Volume: 96; Journal Issue: 1; Journal ID: ISSN 2470-0045
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 58 GEOSCIENCES

Citation Formats

Hurley, R. C., Lind, J., Pagan, D. C., Homel, M. A., Akin, M. C., and Herbold, E. B.. Linking initial microstructure and local response during quasistatic granular compaction. United States: N. p., 2017. Web. doi:10.1103/PhysRevE.96.012905.
Hurley, R. C., Lind, J., Pagan, D. C., Homel, M. A., Akin, M. C., & Herbold, E. B.. Linking initial microstructure and local response during quasistatic granular compaction. United States. doi:10.1103/PhysRevE.96.012905.
Hurley, R. C., Lind, J., Pagan, D. C., Homel, M. A., Akin, M. C., and Herbold, E. B.. Mon . "Linking initial microstructure and local response during quasistatic granular compaction". United States. doi:10.1103/PhysRevE.96.012905.
@article{osti_1406424,
title = {Linking initial microstructure and local response during quasistatic granular compaction},
author = {Hurley, R. C. and Lind, J. and Pagan, D. C. and Homel, M. A. and Akin, M. C. and Herbold, E. B.},
abstractNote = {In this study, we performed experiments combining three-dimensional x-ray diffraction and x-ray computed tomography to explore the relationship between microstructure and local force and strain during quasistatic granular compaction. We found that initial void space around a grain and contact coordination number before compaction can be used to predict regions vulnerable to above-average local force and strain at later stages of compaction. We also found correlations between void space around a grain and coordination number, and between grain stress and maximum interparticle force, at all stages of compaction. Finally, we observed grains that fracture to have an above-average initial local void space and a below-average initial coordination number. In conclusion, our findings provide (1) a detailed description of microstructure evolution during quasistatic granular compaction, (2) an approach for identifying regions vulnerable to large values of strain and interparticle force, and (3) methods for identifying regions of a material with large interparticle forces and coordination numbers from measurements of grain stress and local porosity.},
doi = {10.1103/PhysRevE.96.012905},
journal = {Physical Review E},
number = 1,
volume = 96,
place = {United States},
year = {Mon Jul 24 00:00:00 EDT 2017},
month = {Mon Jul 24 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on July 24, 2018
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