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Article Dans Une Revue Physical Review Letters Année : 2022

Avalanches, Clusters, and Structural Change in Cyclically Sheared Silica Glass

Résumé

We investigate avalanches and clusters associated with plastic rearrangements and the nature of structural change in the prototypical strong glass, silica, computationally. We perform a detailed analysis of avalanches, and of spatially disconnected clusters that constitute them, for a wide range of system sizes. Although qualitative aspects of yielding in silica are similar to other glasses, the statistics of clusters exhibits significant differences, which we associate with differences in local structure. Across the yielding transition, anomalous structural change and densification, associated with a suppression of tetrahedral order, is observed to accompany strain localization.

Dates et versions

hal-04493205 , version 1 (07-03-2024)

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Himangsu Bhaumik, Giuseppe Foffi, Srikanth Sastry. Avalanches, Clusters, and Structural Change in Cyclically Sheared Silica Glass. Physical Review Letters, 2022, 128 (9), pp.098001. ⟨10.1103/PhysRevLett.128.098001⟩. ⟨hal-04493205⟩
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