Unraveling the role of gravity in shaping intruder dynamics within vibrated granular media
Abstract Our experiments aboard the Chinese Space Station reveal a gravity-driven transition in intruder dynamics within vibrated granular media. While vibrations typically enable an intruder to ascend in a granular bed, low-gravity conditions induce it to descend under similar vibrations. Using a H...
Saved in:
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2024-12-01
|
| Series: | Communications Physics |
| Online Access: | https://doi.org/10.1038/s42005-024-01927-9 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841559344349446144 |
|---|---|
| author | Ke Cheng Meiying Hou Wei Sun Zhihong Qiao Xiang Li Chufan Lai Jinchao Yuan Tuo Li Fangfu Ye Ke Chen Mingcheng Yang |
| author_facet | Ke Cheng Meiying Hou Wei Sun Zhihong Qiao Xiang Li Chufan Lai Jinchao Yuan Tuo Li Fangfu Ye Ke Chen Mingcheng Yang |
| author_sort | Ke Cheng |
| collection | DOAJ |
| description | Abstract Our experiments aboard the Chinese Space Station reveal a gravity-driven transition in intruder dynamics within vibrated granular media. While vibrations typically enable an intruder to ascend in a granular bed, low-gravity conditions induce it to descend under similar vibrations. Using a Hall-sensor array tracking method, we monitor the intruder’s movement throughout each vibration cycle and identified two competing mechanisms: inertia and gravity-dependent penetration. As gravity decreases, we observe a significant reduction in the scaled damping coefficient and hydrostatic pressure coefficient indicating that bed particles disperse more readily upon intruder impact, facilitating deeper penetration. Our findings highlight a critical transition from downward to upward motion of the intruder as vibration acceleration exceeds a threshold, which increases as gravity decreases. These insights into intruder dynamics in low-gravity environments have significant implications for asteroid exploration and lunar base construction, enhancing our understanding of the Brazil nut effect and the formation of planetesimal. |
| format | Article |
| id | doaj-art-262bcd3491a645fa90a35842bf742db2 |
| institution | Kabale University |
| issn | 2399-3650 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Physics |
| spelling | doaj-art-262bcd3491a645fa90a35842bf742db22025-01-05T12:32:50ZengNature PortfolioCommunications Physics2399-36502024-12-017111010.1038/s42005-024-01927-9Unraveling the role of gravity in shaping intruder dynamics within vibrated granular mediaKe Cheng0Meiying Hou1Wei Sun2Zhihong Qiao3Xiang Li4Chufan Lai5Jinchao Yuan6Tuo Li7Fangfu Ye8Ke Chen9Mingcheng Yang10Beijing National Laboratory for Condensed Matter Physics and Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics and Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of SciencesTechnology and Engineering Center for Space Utilization, Chinese Academy of SciencesTechnology and Engineering Center for Space Utilization, Chinese Academy of SciencesTechnology and Engineering Center for Space Utilization, Chinese Academy of SciencesTechnology and Engineering Center for Space Utilization, Chinese Academy of SciencesTechnology and Engineering Center for Space Utilization, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics and Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics and Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics and Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics and Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of SciencesAbstract Our experiments aboard the Chinese Space Station reveal a gravity-driven transition in intruder dynamics within vibrated granular media. While vibrations typically enable an intruder to ascend in a granular bed, low-gravity conditions induce it to descend under similar vibrations. Using a Hall-sensor array tracking method, we monitor the intruder’s movement throughout each vibration cycle and identified two competing mechanisms: inertia and gravity-dependent penetration. As gravity decreases, we observe a significant reduction in the scaled damping coefficient and hydrostatic pressure coefficient indicating that bed particles disperse more readily upon intruder impact, facilitating deeper penetration. Our findings highlight a critical transition from downward to upward motion of the intruder as vibration acceleration exceeds a threshold, which increases as gravity decreases. These insights into intruder dynamics in low-gravity environments have significant implications for asteroid exploration and lunar base construction, enhancing our understanding of the Brazil nut effect and the formation of planetesimal.https://doi.org/10.1038/s42005-024-01927-9 |
| spellingShingle | Ke Cheng Meiying Hou Wei Sun Zhihong Qiao Xiang Li Chufan Lai Jinchao Yuan Tuo Li Fangfu Ye Ke Chen Mingcheng Yang Unraveling the role of gravity in shaping intruder dynamics within vibrated granular media Communications Physics |
| title | Unraveling the role of gravity in shaping intruder dynamics within vibrated granular media |
| title_full | Unraveling the role of gravity in shaping intruder dynamics within vibrated granular media |
| title_fullStr | Unraveling the role of gravity in shaping intruder dynamics within vibrated granular media |
| title_full_unstemmed | Unraveling the role of gravity in shaping intruder dynamics within vibrated granular media |
| title_short | Unraveling the role of gravity in shaping intruder dynamics within vibrated granular media |
| title_sort | unraveling the role of gravity in shaping intruder dynamics within vibrated granular media |
| url | https://doi.org/10.1038/s42005-024-01927-9 |
| work_keys_str_mv | AT kecheng unravelingtheroleofgravityinshapingintruderdynamicswithinvibratedgranularmedia AT meiyinghou unravelingtheroleofgravityinshapingintruderdynamicswithinvibratedgranularmedia AT weisun unravelingtheroleofgravityinshapingintruderdynamicswithinvibratedgranularmedia AT zhihongqiao unravelingtheroleofgravityinshapingintruderdynamicswithinvibratedgranularmedia AT xiangli unravelingtheroleofgravityinshapingintruderdynamicswithinvibratedgranularmedia AT chufanlai unravelingtheroleofgravityinshapingintruderdynamicswithinvibratedgranularmedia AT jinchaoyuan unravelingtheroleofgravityinshapingintruderdynamicswithinvibratedgranularmedia AT tuoli unravelingtheroleofgravityinshapingintruderdynamicswithinvibratedgranularmedia AT fangfuye unravelingtheroleofgravityinshapingintruderdynamicswithinvibratedgranularmedia AT kechen unravelingtheroleofgravityinshapingintruderdynamicswithinvibratedgranularmedia AT mingchengyang unravelingtheroleofgravityinshapingintruderdynamicswithinvibratedgranularmedia |