Two-dimensional squishy glass: yielding under oscillatory shear
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866914941497245696 |
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| author | Ghosh, Sayantan Nayak, Rahul Vemparala, Satyavani Chaudhuri, Pinaki |
| author_facet | Ghosh, Sayantan Nayak, Rahul Vemparala, Satyavani Chaudhuri, Pinaki |
| contents | The yielding response to an imposed oscillatory shear is investigated for a model two-dimensional dense glass composed of bidisperse, deformable polymer rings, with the ring stiffness being the control parameter. In the quiescent glassy state, the more flexible rings exhibit a broader spectrum of shape fluctuations, which becomes increasingly constrained with increasing ring stiffness. Under shear, the highly packed rings yield, i.e. the thermal assembly looses rigidity, with the threshold yield strain increasing significantly with decreasing ring stiffness. Further, the rings display significant deviations in their shape compared to their unsheared counterparts. This study provides insights into the interplay between shape changes and translational rearrangements under shear, thus contributing to the understanding of yielding transition in densely packed, deformable polymer systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_04725 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Two-dimensional squishy glass: yielding under oscillatory shear Ghosh, Sayantan Nayak, Rahul Vemparala, Satyavani Chaudhuri, Pinaki Soft Condensed Matter The yielding response to an imposed oscillatory shear is investigated for a model two-dimensional dense glass composed of bidisperse, deformable polymer rings, with the ring stiffness being the control parameter. In the quiescent glassy state, the more flexible rings exhibit a broader spectrum of shape fluctuations, which becomes increasingly constrained with increasing ring stiffness. Under shear, the highly packed rings yield, i.e. the thermal assembly looses rigidity, with the threshold yield strain increasing significantly with decreasing ring stiffness. Further, the rings display significant deviations in their shape compared to their unsheared counterparts. This study provides insights into the interplay between shape changes and translational rearrangements under shear, thus contributing to the understanding of yielding transition in densely packed, deformable polymer systems. |
| title | Two-dimensional squishy glass: yielding under oscillatory shear |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2409.04725 |