Identifying bridges from asymmetric load-bearing structures in tapped granular packings
Abstract The presence of gravity and friction results in the formation of cooperative bridge structures in granular systems, where neighboring particles support each other for mutual stability. These bridge structures serve as unique mechanical backbones in both static granular packings and dynamic...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-07-01
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| Series: | Communications Physics |
| Online Access: | https://doi.org/10.1038/s42005-025-02229-4 |
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| author | Chijin Zhou Shuyang Zhang Xueliang Dai Yixin Cao Ye Yuan Chengjie Xia Zhikun Zeng Yujie Wang |
| author_facet | Chijin Zhou Shuyang Zhang Xueliang Dai Yixin Cao Ye Yuan Chengjie Xia Zhikun Zeng Yujie Wang |
| author_sort | Chijin Zhou |
| collection | DOAJ |
| description | Abstract The presence of gravity and friction results in the formation of cooperative bridge structures in granular systems, where neighboring particles support each other for mutual stability. These bridge structures serve as unique mechanical backbones in both static granular packings and dynamic granular flows, significantly influencing their mechanical responses and rheological behaviors. Using high-resolution x-ray tomography, we experimentally investigate the bridge structures in tapped granular packings composed of particles with varying friction coefficients. We find that gravity can induce subtle structural changes on the load-bearing contacts, allowing us to identify the correct load-bearing contacts based on structural information alone. Using these identified load-bearing contacts, we investigate the cooperative bridge structures which are mechanical backbones of the system. We characterize the geometric properties of these bridges and find that their cooperativity increases as the packing fraction decreases. The knowledge of bridges can enhance our understanding of the mechanical stability and rheological properties of granular materials, since bridges represent localized, mutually stabilizing configurations that bear load collectively. |
| format | Article |
| id | doaj-art-554f4bc0ca7c4cfb815f1ef81a23bdbc |
| institution | Kabale University |
| issn | 2399-3650 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Physics |
| spelling | doaj-art-554f4bc0ca7c4cfb815f1ef81a23bdbc2025-08-20T04:02:57ZengNature PortfolioCommunications Physics2399-36502025-07-01811610.1038/s42005-025-02229-4Identifying bridges from asymmetric load-bearing structures in tapped granular packingsChijin Zhou0Shuyang Zhang1Xueliang Dai2Yixin Cao3Ye Yuan4Chengjie Xia5Zhikun Zeng6Yujie Wang7Department of Physics, College of Mathematics and Physics, Chengdu University of TechnologySchool of Physics and Astronomy, Shanghai Jiao Tong UniversityDepartment of Physics, College of Mathematics and Physics, Chengdu University of TechnologySchool of Physics and Astronomy, Shanghai Jiao Tong UniversityResearch Center for Advanced Science and Technology, University of TokyoShanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal UniversitySchool of Physics and Astronomy, Shanghai Jiao Tong UniversityDepartment of Physics, College of Mathematics and Physics, Chengdu University of TechnologyAbstract The presence of gravity and friction results in the formation of cooperative bridge structures in granular systems, where neighboring particles support each other for mutual stability. These bridge structures serve as unique mechanical backbones in both static granular packings and dynamic granular flows, significantly influencing their mechanical responses and rheological behaviors. Using high-resolution x-ray tomography, we experimentally investigate the bridge structures in tapped granular packings composed of particles with varying friction coefficients. We find that gravity can induce subtle structural changes on the load-bearing contacts, allowing us to identify the correct load-bearing contacts based on structural information alone. Using these identified load-bearing contacts, we investigate the cooperative bridge structures which are mechanical backbones of the system. We characterize the geometric properties of these bridges and find that their cooperativity increases as the packing fraction decreases. The knowledge of bridges can enhance our understanding of the mechanical stability and rheological properties of granular materials, since bridges represent localized, mutually stabilizing configurations that bear load collectively.https://doi.org/10.1038/s42005-025-02229-4 |
| spellingShingle | Chijin Zhou Shuyang Zhang Xueliang Dai Yixin Cao Ye Yuan Chengjie Xia Zhikun Zeng Yujie Wang Identifying bridges from asymmetric load-bearing structures in tapped granular packings Communications Physics |
| title | Identifying bridges from asymmetric load-bearing structures in tapped granular packings |
| title_full | Identifying bridges from asymmetric load-bearing structures in tapped granular packings |
| title_fullStr | Identifying bridges from asymmetric load-bearing structures in tapped granular packings |
| title_full_unstemmed | Identifying bridges from asymmetric load-bearing structures in tapped granular packings |
| title_short | Identifying bridges from asymmetric load-bearing structures in tapped granular packings |
| title_sort | identifying bridges from asymmetric load bearing structures in tapped granular packings |
| url | https://doi.org/10.1038/s42005-025-02229-4 |
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