The instantaneous shear modulus in the shoving model

Jeppe C. Dyre; Wei Hua Wang

doi:10.1063/1.4724102

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arXiv · 1203.6644

The instantaneous shear modulus in the shoving model

Jeppe C. Dyre·Wei Hua Wang

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Abstract

We point out that the instantaneous shear modulus of the shoving model for the non-Arrhenius temperature dependence of viscous liquids' relaxation time is the experimentally accessible high-frequency plateau modulus, not the idealized instantaneous affine shear modulus that cannot be measured. Data for a large selection of metallic glasses are compared to three different versions of the shoving model. The original shear-modulus based version shows a slight correlation to the Poisson ratio, which is eliminated by the energy-landscape formulation of the model in which the bulk modulus plays a minor role.

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Jeppe C. Dyre, Wei Hua Wang. 2012-05-19. The instantaneous shear modulus in the shoving model. https://doi.org/10.1063/1.4724102

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