Spreading plastic failure as a mechanism for the shear modulus reduction in amorphous solids

Vijayakumar Chikkadi, Oleg Gendelman, Valery Ilyin, J. Ashwin, Itamar Procaccia, Carmel A.B.Z. Shor

Research output: Contribution to journalArticlepeer-review

Abstract

We focus on the observed reduction in shear modulus when the stress on an amorphous solid is increased beyond the initial linear region. Careful numerical quasi-static simulations reveal an intimate relation between plastic failure and the reduction in shear modulus. The attainment of the smallest value of the shear modulus is identified with spreading of the regions that underwent a plastic event. We present an elementary "two-state" model that interpolates between failed and virgin regions and provides a simple and effective characterization of the phenomenon.

Original languageEnglish
Article number48001
JournalEPL
Volume110
Issue number4
DOIs
StatePublished - 1 May 2015

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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