Abstract
A dynamic multi-scale model is presented for the elastin-water system that captures previously published data on the effect of moisture on the glass transition of the elastin. Elastin in vivo must operate in the rubbery region, i.e. above the glass transition, which depends on frequency and moisture content. This model assumes neo-Hookean long-term behavior and a relaxation modulus based on a molecular bond energy function. The model reproduces the glass transition behavior with respect to load frequency and to ambient relative humidity. It predicts dynamic responses such as creep and rate-dependent stress-stretch relations, and so is not empirical in the sense of being a fit to such data.
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