Dynamics of viscoplastic deformation in amorphous solids

  title={Dynamics of viscoplastic deformation in amorphous solids},
  author={Michael L. Falk and James Langer},
  journal={Physical Review E},
We propose a dynamical theory of low-temperature shear deformation in amorphous solids. Our analysis is based on molecular-dynamics simulations of a two-dimensional, two-component noncrystalline system. These numerical simulations reveal behavior typical of metallic glasses and other viscoplastic materials, specifically, reversible elastic deformation at small applied stresses, irreversible plastic deformation at larger stresses, a stress threshold above which unbounded plastic flow occurs, and… 

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