Comminution‐Induced Transient Frictional Behavior in Sheared Granular Halite
Abstract Grain comminution is commonly observed in numerous geological settings. To elucidate the role of grain comminution in dry granular friction, we sheared breakable halite (NaCl) grains using a ring‐shear configuration at a constant slip rate under various normal stresses. We observed transien...
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| Format: | Article |
| Language: | English |
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Wiley
2024-11-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2024GL109645 |
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| author | Chengrui Chang Hiroyuki Noda Yohei Hamada Chao Huang Tao Ma Gonghui Wang Tetsuo Yamaguchi |
| author_facet | Chengrui Chang Hiroyuki Noda Yohei Hamada Chao Huang Tao Ma Gonghui Wang Tetsuo Yamaguchi |
| author_sort | Chengrui Chang |
| collection | DOAJ |
| description | Abstract Grain comminution is commonly observed in numerous geological settings. To elucidate the role of grain comminution in dry granular friction, we sheared breakable halite (NaCl) grains using a ring‐shear configuration at a constant slip rate under various normal stresses. We observed transient frictional behaviors: a constant regime exhibiting a high friction coefficient at small slip displacements, and a weakening regime showing a substantial decay in friction at large slip displacements. The characteristic slip lengths for both regimes decreased with normal stress and were characterized by similar exponents. Micro‐X‐ray tomography revealed the evolution of microstructure from distributed grain comminution to progressive shear localization for these two regimes. We propose that the filling processes of comminuted fine particles, during which fine particles saturate and then overflow the shear zone, define transient frictional behaviors. This study may hold significant implications for natural shear systems, given the ubiquity of comminution and localization phenomena. |
| format | Article |
| id | doaj-art-996372322d8345a1ac9cda3d6c21b310 |
| institution | DOAJ |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-996372322d8345a1ac9cda3d6c21b3102025-08-20T03:16:26ZengWileyGeophysical Research Letters0094-82761944-80072024-11-015121n/an/a10.1029/2024GL109645Comminution‐Induced Transient Frictional Behavior in Sheared Granular HaliteChengrui Chang0Hiroyuki Noda1Yohei Hamada2Chao Huang3Tao Ma4Gonghui Wang5Tetsuo Yamaguchi6Department of Biomaterial Sciences Graduate School of Agricultural and Life Sciences The University of Tokyo Tokyo JapanDisaster Prevention Research Institute Kyoto University Uji JapanKochi Institute for Core Sample Research Japan Agency for Marine‐Earth Science and Technology (JAMSTEC) Nankoku JapanDivision of Earth and Planetary Sciences Graduate School of Science Kyoto University Uji JapanInstitute of Modern Physics Chinese Academy of Sciences Lanzhou ChinaDisaster Prevention Research Institute Kyoto University Uji JapanDepartment of Biomaterial Sciences Graduate School of Agricultural and Life Sciences The University of Tokyo Tokyo JapanAbstract Grain comminution is commonly observed in numerous geological settings. To elucidate the role of grain comminution in dry granular friction, we sheared breakable halite (NaCl) grains using a ring‐shear configuration at a constant slip rate under various normal stresses. We observed transient frictional behaviors: a constant regime exhibiting a high friction coefficient at small slip displacements, and a weakening regime showing a substantial decay in friction at large slip displacements. The characteristic slip lengths for both regimes decreased with normal stress and were characterized by similar exponents. Micro‐X‐ray tomography revealed the evolution of microstructure from distributed grain comminution to progressive shear localization for these two regimes. We propose that the filling processes of comminuted fine particles, during which fine particles saturate and then overflow the shear zone, define transient frictional behaviors. This study may hold significant implications for natural shear systems, given the ubiquity of comminution and localization phenomena.https://doi.org/10.1029/2024GL109645granular frictioncomminutionshear localizationhaliteslip weakening |
| spellingShingle | Chengrui Chang Hiroyuki Noda Yohei Hamada Chao Huang Tao Ma Gonghui Wang Tetsuo Yamaguchi Comminution‐Induced Transient Frictional Behavior in Sheared Granular Halite Geophysical Research Letters granular friction comminution shear localization halite slip weakening |
| title | Comminution‐Induced Transient Frictional Behavior in Sheared Granular Halite |
| title_full | Comminution‐Induced Transient Frictional Behavior in Sheared Granular Halite |
| title_fullStr | Comminution‐Induced Transient Frictional Behavior in Sheared Granular Halite |
| title_full_unstemmed | Comminution‐Induced Transient Frictional Behavior in Sheared Granular Halite |
| title_short | Comminution‐Induced Transient Frictional Behavior in Sheared Granular Halite |
| title_sort | comminution induced transient frictional behavior in sheared granular halite |
| topic | granular friction comminution shear localization halite slip weakening |
| url | https://doi.org/10.1029/2024GL109645 |
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