Accelerated relaxation in disordered solids under cyclic loading with alternating shear orientation

The effect of alternating shear orientation during cyclic loading on the relaxation dynamics in disordered solids is examined using molecular dynamics simulations. The model glass was initially prepared by rapid cooling from the liquid state and then subjected to cyclic shear along a single plane or periodically alternated in two or three dimensions. We showed that with increasing strain amplitude in the elastic range, the system is relocated to deeper energy minima. Remarkably, it was found that each additional alternation of the shear orientation in the deformation protocol brings the glass to lower energy states. The results of mechanical tests after more than a thousand shear cycles indicate that cyclic loading leads to the increase in strength and shear-modulus anisotropy.

• Publication year

  2019

• Venue

  Journal of Non-Crystalline Solids

• Publication date

  2019-08-18

• Fields of study

  Materials Science, Physics

• Identifiers
  DOI 10.1016/j.jnoncrysol.2019.119683arXiv 1908.06523
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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