Effect of Pinning on the Yielding Transition of Amorphous Solids

Bhanu Prasad Bhowmik, Pinaki Chaudhuri, and Smarajit Karmakar
Phys. Rev. Lett. 123, 185501 – Published 29 October 2019
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Abstract

Using numerical simulations, we have studied the yielding response, in the athermal quasistatic limit, of a model amorphous material having inclusions in the form of randomly pinned particles. We show that, with increasing pinning concentration, the plastic activity becomes more spatially localized, resulting in smaller stress drops, and a corresponding increase in the magnitude of strain where yielding occurs. We demonstrate that, unlike the spatially heterogeneous and avalanche led yielding in the case of the unpinned glass, for the case of large pinning concentration, yielding takes place via a spatially homogeneous proliferation of localized events.

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  • Received 8 September 2018

DOI:https://doi.org/10.1103/PhysRevLett.123.185501

© 2019 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Bhanu Prasad Bhowmik1, Pinaki Chaudhuri2, and Smarajit Karmakar1,*

  • 1Tata Institute of Fundamental Research, 36/P, Gopanpally Village, Serilingampally Mandal, Ranga Reddy District, Hyderabad, 500107, Telangana, India
  • 2Institute of Mathematical Sciences, IV Cross Road, CIT Campus, Taramani, Chennai, 600113, Tamil Nadu, India

  • *smarajit@tifrh.res.in

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Issue

Vol. 123, Iss. 18 — 1 November 2019

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