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arXiv · 0908.4090

The Effective Temperature in Elasto-Plasticity of Amorphous Solids

Laurent Boue'·H. G. E. Hentschel·Itamar Procaccia·Ido Regev·Jacques Zylberg
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Abstract

An effective temperature $T_{\rm eff}$ which differs from the bath temperature is believed to play an essential role in the theory of elasto-plasticity of amorphous solids. The definition of a measurable $T_{\rm eff}$ in the literature on sheared solids suffers however from being connected to a fluctuation-dissipation theorem which is correct only in equilibrium. Here we introduce a natural definition of $T_{\rm eff}$ based on measurable structural features without recourse to any questionable assumption. The value of $T_{\rm eff}$ is connected, using theory and scaling concepts, to the flow stress and the mean energy that characterize the elasto-plastic flow.

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BibTeXRIS

Laurent Boue', H. G. E. Hentschel, Itamar Procaccia, Ido Regev, Jacques Zylberg. 2009-08-27. The Effective Temperature in Elasto-Plasticity of Amorphous Solids. https://doi.org/10.1103/physrevb.81.100201

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