Modelling the linear viscoelastic behavior of silicate glasses near the glass transition point

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A model is derived for the viscoelastic response of glasses at isothermal uniaxial deformation with small strains. A glass is treated as an ensemble of relaxing units with various activation energies for rearrangement. With reference to the energy-landscape concept, the rearrangement process is thought of as a series of hops of relaxing units (trapped in their potential wells on the energy landscape) to higher energy levels. Stress-strain relations are developed by using the laws of thermodynamics. Adjustable parameters are found by fitting experimental data in torsional dynamic tests on a multicomponent silicate glass at several temperatures near the glass transition point.
17 pages, 17 figures

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Materials Science

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http://salesiana.dossiersoluciones.com/handle/123456789/19320

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0205365
 http://arxiv.org/abs/cond-mat/0205365

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arXiv