Da Vinci’s friction for granular media
Abstract The concept of friction was integrated into the broader field of tribology in the 20th century. Here, we revive the older friction coefficient concept and show that it is the defining parameter for a family of granular materials. We show, for the first time, that kinetic friction coefficien...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-024-83889-0 |
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| _version_ | 1841559668335312896 |
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| author | Assaf Miron Rafael Tadmor Victor Multanen Shmulik Pinkert |
| author_facet | Assaf Miron Rafael Tadmor Victor Multanen Shmulik Pinkert |
| author_sort | Assaf Miron |
| collection | DOAJ |
| description | Abstract The concept of friction was integrated into the broader field of tribology in the 20th century. Here, we revive the older friction coefficient concept and show that it is the defining parameter for a family of granular materials. We show, for the first time, that kinetic friction coefficients of such systems can be described as a function of the lubricating fluid and the shape of the granules, without any fitting parameters. With this, we define the value and conditions for the minimal friction of this system and show how it can increase depending on the properties of the system. This paper shows that the minimum possible friction for an assembly of granular media is the same universal constant of ¼ that da Vinci identified for kinetic friction between two rigid bodies. |
| format | Article |
| id | doaj-art-725ad142db3c438e910be9246b52f081 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-725ad142db3c438e910be9246b52f0812025-01-05T12:17:13ZengNature PortfolioScientific Reports2045-23222025-01-011511710.1038/s41598-024-83889-0Da Vinci’s friction for granular mediaAssaf Miron0Rafael Tadmor1Victor Multanen2Shmulik Pinkert3Civil and Environmental Engineering Department, Faculty of Engineering Sciences, Ben- Gurion University of the NegevMechanical Engineering Department, Faculty of Engineering Sciences, Ben-Gurion University of the NegevMechanical Engineering Department, Faculty of Engineering Sciences, Ben-Gurion University of the NegevCivil and Environmental Engineering Department, Faculty of Engineering Sciences, Ben- Gurion University of the NegevAbstract The concept of friction was integrated into the broader field of tribology in the 20th century. Here, we revive the older friction coefficient concept and show that it is the defining parameter for a family of granular materials. We show, for the first time, that kinetic friction coefficients of such systems can be described as a function of the lubricating fluid and the shape of the granules, without any fitting parameters. With this, we define the value and conditions for the minimal friction of this system and show how it can increase depending on the properties of the system. This paper shows that the minimum possible friction for an assembly of granular media is the same universal constant of ¼ that da Vinci identified for kinetic friction between two rigid bodies.https://doi.org/10.1038/s41598-024-83889-0 |
| spellingShingle | Assaf Miron Rafael Tadmor Victor Multanen Shmulik Pinkert Da Vinci’s friction for granular media Scientific Reports |
| title | Da Vinci’s friction for granular media |
| title_full | Da Vinci’s friction for granular media |
| title_fullStr | Da Vinci’s friction for granular media |
| title_full_unstemmed | Da Vinci’s friction for granular media |
| title_short | Da Vinci’s friction for granular media |
| title_sort | da vinci s friction for granular media |
| url | https://doi.org/10.1038/s41598-024-83889-0 |
| work_keys_str_mv | AT assafmiron davincisfrictionforgranularmedia AT rafaeltadmor davincisfrictionforgranularmedia AT victormultanen davincisfrictionforgranularmedia AT shmulikpinkert davincisfrictionforgranularmedia |