A model for the compressible, viscoelastic behavior of human amnion addressing tissue variability through a single parameter

Mauri, Arabella and Ehret, Alexander E. and De Focatiis, Davide S.A. and Mazza, Edoardo (2016) A model for the compressible, viscoelastic behavior of human amnion addressing tissue variability through a single parameter. Biomechanics and Modeling in Mechanobiology, 15 (4). pp. 1005-1017. ISSN 1617-7940

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Abstract

A viscoelastic, compressible model is proposed to rationalize the recently reported response of human amnion in multiaxial relaxation and creep experiments. The theory includes two viscoelastic contributions responsible for the short- and long-term time- dependent response of the material. These two contributions can be related to physical processes: water flow through the tissue and dissipative characteristics of the collagen fibers, respectively. An accurate agreement of the model with the mean tension and kinematic response of amnion in uniaxial relaxation tests was achieved. By variation of a single linear factor that accounts for the variability among tissue samples, the model provides very sound predictions not only of the uniaxial relaxation but also of the uniaxial creep and strip-biaxial relaxation behavior of individual samples. This suggests that a wide range of viscoelastic behaviors due to patient-specific variations in tissue composition.

Item Type: Article
Additional Information: The final publication is available at Springer via http://dx.doi.org/10.1007/s10237-015-0739-0.
Keywords: Biological Membrane, Compressible Viscoelastic Model, � Specimen Variability, Human Amnion,� Creep, Stress Relaxation
Schools/Departments: University of Nottingham, UK > Faculty of Engineering > Department of Mechanical, Materials and Manufacturing Engineering
Identification Number: 10.1007/s10237-015-0739-0
Depositing User: De Focatiis, Dr Davide S A
Date Deposited: 05 Sep 2017 09:53
Last Modified: 06 Sep 2017 00:03
URI: http://eprints.nottingham.ac.uk/id/eprint/45414

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