Steady-state, effective-temperature dynamics in a glassy material

Abstract

We present an STZ-based analysis of numerical simulations by Haxton and Liu (HL). The extensive HL data sharply test the basic assumptions of the STZ theory, especially the central role played by the effective disorder temperature as a dynamical state variable. We find that the theory survives these tests, and that the HL data provide important and interesting constraints on some of its specific ingredients. Our most surprising conclusion is that, when driven at various constant shear rates in the low-temperature glassy state, the HL system exhibits a classic glass transition, including super-Arrhenius behavior, as a function of the effective temperature.

9 pages, 6 figures

References in corpus (3)

• Strain localization in a shear transformation zone model for amorphous solids
• Evaluation of the "disorder temperature" and "free volume" formalisms via simulations of shear banding in amorphous solids
• Excitation Chains at the Glass Transition

Cited by in corpus (5)

• Shear-transformation-zone theory of plastic deformation near the glass transition
• Rate dependent shear bands in a shear transformation zone model of amorphous solids
• Effective temperatures and activated dynamics for a two-dimensional air-driven granular system on two approaches to jamming
• Effective Temperature Dynamics in an Athermal Amorphous Plasticity Theory
• Fronts Propagation at the Onset of Plastic Yielding