The effect of a reversible shear transformation on plastic deformation of an amorphous solid

Abstract

Molecular dynamics simulations are performed to investigate the plastic response of a model glass to a local shear transformation in a quiescent system. The deformation of the material is induced by a spherical inclusion that is gradually strained into an ellipsoid of the same volume and then reverted back into the sphere. We show that the number of cage-breaking events increases with increasing strain amplitude of the shear transformation. The results of numerical simulations indicate that the density of cage jumps is larger in the cases of weak damping or slow shear transformation. Remarkably, we also found that, for a given strain amplitude, the peak value of the density profiles is a function of the ratio of the damping coefficient and the time scale of the shear transformation.

19 pages, 7 figures

References in corpus (5)

• The building blocks of dynamical heterogeneities in dense granular media
• A microscopic view of the yielding transition in concentrated emulsions
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Cited by in corpus (4)

• Reversible plastic events during oscillatory deformation of amorphous solids
• Collective nonaffine displacements in amorphous materials during large-amplitude oscillatory shear
• Nonaffine rearrangements of atoms in deformed and quiescent binary glasses
• Alternating shear orientation during cyclic loading facilitates yielding in amorphous materials