Search results for " property (E.A.)"

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Theory of heterogeneous viscoelasticity

2015

We review a new theory of viscoelasticity of a glass-forming viscous liquid near and below the glass transition. In our model we assume that each point in the material has a specific viscosity, which varies randomly in space according to a fluctuating activation free energy. We include a Maxwellian elastic term and assume that the corresponding shear modulus fluctuates as well with the same distribution as that of the activation barriers. The model is solved in coherent-potential approximation (CPA), for which a derivation is given. The theory predicts an Arrhenius-type temperature dependence of the viscosity in the vanishing-frequency limit, independent of the distribution of the activatio…

Distribution (number theory)FOS: Physical sciences02 engineering and technologyActivation energyCondensed Matter - Soft Condensed MatterViscous liquidSpace (mathematics)01 natural sciencesmechanical property evaluationViscoelasticityShear modulusViscosity0103 physical sciencesCoherent potential approximation010306 general physicsviscoelasticityglassPhysicsDisordered Systems and Neural Networks (cond-mat.dis-nn)MechanicsCondensed Matter - Disordered Systems and Neural Networks021001 nanoscience & nanotechnologyCondensed Matter Physicsglass relaxationcoherent potential approximation; glass; glass relaxation; mechanical property evaluation; metallic glasses; viscoelasticity; Condensed Matter PhysicsSoft Condensed Matter (cond-mat.soft)metallic glasses0210 nano-technologycoherent potential approximation
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