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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2505.14912 |
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| _version_ | 1866912385292304384 |
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| author | Sarkar, Debargha Nampoothiri, Jishnu N. Mungan, Muhittin Parley, Jack T. Sollich, Peter Sastry, Srikanth |
| author_facet | Sarkar, Debargha Nampoothiri, Jishnu N. Mungan, Muhittin Parley, Jack T. Sollich, Peter Sastry, Srikanth |
| contents | Recent computer simulations reveal several intriguing features in the evolution of properties of amorphous solids subjected to repeated cyclic shear deformation. These include the divergence of the number of cycles to reach steady states as the yielding point is approached, a non-monotonic change of properties with cycles, and the possibility of a spectrum of frozen states. Theoretical attempts to capture these properties through simple models, including the Ehrenfest model describing a random walk in a confining potential, have met partial success. Here, we show that incorporating the influence of mechanical noise through a feedback term leads to a genuine dynamical transition with characteristics reflecting those of yielding. Coarse graining the dynamics into a small number of variables leads to new insights regarding the dynamics of yielding. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_14912 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Coarse grained descriptions of the dynamics of yielding of amorphous solids under cyclic shear Sarkar, Debargha Nampoothiri, Jishnu N. Mungan, Muhittin Parley, Jack T. Sollich, Peter Sastry, Srikanth Statistical Mechanics Recent computer simulations reveal several intriguing features in the evolution of properties of amorphous solids subjected to repeated cyclic shear deformation. These include the divergence of the number of cycles to reach steady states as the yielding point is approached, a non-monotonic change of properties with cycles, and the possibility of a spectrum of frozen states. Theoretical attempts to capture these properties through simple models, including the Ehrenfest model describing a random walk in a confining potential, have met partial success. Here, we show that incorporating the influence of mechanical noise through a feedback term leads to a genuine dynamical transition with characteristics reflecting those of yielding. Coarse graining the dynamics into a small number of variables leads to new insights regarding the dynamics of yielding. |
| title | Coarse grained descriptions of the dynamics of yielding of amorphous solids under cyclic shear |
| topic | Statistical Mechanics |
| url | https://arxiv.org/abs/2505.14912 |