Transition from static to dynamic friction in an array of frictional disks
The nature of an instability that controls the transition from static to dynamical friction is studied in the context of an array of frictional disks that are pressed from above on a substrate. In this case the forces are all explicit and Newtonian dynamics can be employed without any phenomenologic...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/138032 |
| _version_ | 1826127658659872768 |
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| author | Charan, Harish Chattoraj, Joyjit Pica Ciamarra, Massimo Procaccia, Itamar |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Charan, Harish Chattoraj, Joyjit Pica Ciamarra, Massimo Procaccia, Itamar |
| author_sort | Charan, Harish |
| collection | NTU |
| description | The nature of an instability that controls the transition from static to dynamical friction is studied in the context of an array of frictional disks that are pressed from above on a substrate. In this case the forces are all explicit and Newtonian dynamics can be employed without any phenomenological assumptions. We show that an oscillatory instability that had been discovered recently is responsible for the transition, allowing individual disks to spontaneously reach the Coulomb limit and slide with dynamic friction. The transparency of the model allows a full understanding of the phenomenon, including the speeds of the waves that travel from the trailing to the leading edge and vice versa. |
| first_indexed | 2024-10-01T07:12:10Z |
| format | Journal Article |
| id | ntu-10356/138032 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:12:10Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1380322023-02-28T19:51:10Z Transition from static to dynamic friction in an array of frictional disks Charan, Harish Chattoraj, Joyjit Pica Ciamarra, Massimo Procaccia, Itamar School of Physical and Mathematical Sciences Science::Physics::Atomic physics::Statistical physics Elasticity Friction The nature of an instability that controls the transition from static to dynamical friction is studied in the context of an array of frictional disks that are pressed from above on a substrate. In this case the forces are all explicit and Newtonian dynamics can be employed without any phenomenological assumptions. We show that an oscillatory instability that had been discovered recently is responsible for the transition, allowing individual disks to spontaneously reach the Coulomb limit and slide with dynamic friction. The transparency of the model allows a full understanding of the phenomenon, including the speeds of the waves that travel from the trailing to the leading edge and vice versa. MOE (Min. of Education, S’pore) Published version 2020-04-22T04:45:16Z 2020-04-22T04:45:16Z 2020 Journal Article Charan, H., Chattoraj, J., Pica Ciamarra, M., & Procaccia, I. (2020). Transition from static to dynamic friction in an array of frictional disks. Physical Review Letters, 124(3), 030602-. doi:10.1103/PhysRevLett.124.030602 0031-9007 https://hdl.handle.net/10356/138032 10.1103/PhysRevLett.124.030602 32031841 2-s2.0-85079111161 3 124 en Physical Review Letters © 2020 American Physical Society. All rights reserved. This paper was published in Physical Review Letters and is made available with permission of American Physical Society. application/pdf |
| spellingShingle | Science::Physics::Atomic physics::Statistical physics Elasticity Friction Charan, Harish Chattoraj, Joyjit Pica Ciamarra, Massimo Procaccia, Itamar Transition from static to dynamic friction in an array of frictional disks |
| title | Transition from static to dynamic friction in an array of frictional disks |
| title_full | Transition from static to dynamic friction in an array of frictional disks |
| title_fullStr | Transition from static to dynamic friction in an array of frictional disks |
| title_full_unstemmed | Transition from static to dynamic friction in an array of frictional disks |
| title_short | Transition from static to dynamic friction in an array of frictional disks |
| title_sort | transition from static to dynamic friction in an array of frictional disks |
| topic | Science::Physics::Atomic physics::Statistical physics Elasticity Friction |
| url | https://hdl.handle.net/10356/138032 |
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