Interplay of rearrangements, strain, and local structure during avalanche propagation

Ge Zhang; Sean Ridout; Andrea J. Liu

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arXiv · 2009.11414

Interplay of rearrangements, strain, and local structure during avalanche propagation

Ge Zhang·Sean Ridout·Andrea J. Liu

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Abstract

Jammed soft disks exhibit avalanches of particle rearrangements under quasistatic shear. We follow the avalanches using steepest descent to decompose them into individual localized rearrangements. We characterize the local structural environment of each particle by a machine-learned quantity, softness, designed to be highly correlated with rearrangements, and analyze the interplay between softness, rearrangements and strain. Our findings form the foundation of an augmented elastoplastic model that includes local structure.

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Ge Zhang, Sean Ridout, Andrea J. Liu. 2020-09-23. Interplay of rearrangements, strain, and local structure during avalanche propagation. https://arxiv.org/abs/2009.11414

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