期刊
PHYSICAL REVIEW E
卷 89, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.89.042302
关键词
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资金
- Institut Universitaire de France [ERC-2011-ADG20110209]
- Rhone-Alpes region [CPER07_13 CIRA]
- Equip@Meso project of the programme Investissements d'Avenir [ANR-10-EQPX-29-01]
- Peter Wall Institute for Advanced Studies
- Consulate General of France in Vancouver
The elastic response of a two-dimensional amorphous solid to induced local shear transformations, which mimic the elementary plastic events occurring in deformed glasses, is investigated via molecular-dynamics simulations. We show that for different spatial realizations of the transformation, despite relative fluctuations of order one, the long-time equilibrium response averages out to the prediction of the Eshelby inclusion problem for a continuum elastic medium. We characterize the effects of the underlying dynamics on the propagation of the elastic signal. A crossover from a propagative transmission in the case of weakly damped dynamics to a diffusive transmission for strong damping is evidenced. In the latter case, the full time-dependent elastic response is in agreement with the theoretical prediction, obtained by solving the diffusion equation for the displacement field in an elastic medium.
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