2018/08/30 by Bhanu Prasad Bhowmik, Pinaki Chaudhuri, Smarajit Karmakar
Physics and Astronomy · #cond-mat.soft #cond-mat.dis-nn #cond-mat.stat-mech
paper · pdf · doi:10.1103/physrevlett.123.185501
published as Phys. Rev. Lett. 123, 185501 (2019)
arxiv created 2018/08/30 · arxiv updated 2019/11/06
Using numerical simulations, we have studied the yielding response, in the athermal quasi static 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 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.