|Publication ahead of print|
|Published online||06 September 2017|
Homogenization of a viscoelastic model for plant cell wall biomechanics∗
1 Department of Mathematics, University of Dundee. Dundee, DD1 4HN, UK.
2 Department of Mathematics and Statistics, Loyola University Chicago, 60660 Chicago, USA.
Received: 10 November 2015
Accepted: 31 August 2016
The microscopic structure of a plant cell wall is given by cellulose microfibrils embedded in a cell wall matrix. In this paper we consider a microscopic model for interactions between viscoelastic deformations of a plant cell wall and chemical processes in the cell wall matrix. We consider elastic deformations of the cell wall microfibrils and viscoelastic Kelvin–Voigt type deformations of the cell wall matrix. Using homogenization techniques (two-scale convergence and periodic unfolding methods) we derive macroscopic equations from the microscopic model for cell wall biomechanics consisting of strongly coupled equations of linear viscoelasticity and a system of reaction-diffusion and ordinary differential equations. As is typical for microscopic viscoelastic problems, the macroscopic equations governing the viscoelastic deformations of plant cell walls contain memory terms. The derivation of the macroscopic problem for the degenerate viscoelastic equations is conducted using a perturbation argument.
Mathematics Subject Classification: 35B27 / 35Q92 / 35Kxx / 74Qxx / 74A40 / 74D05
Key words: Homogenization / two-scale convergence / periodic unfolding method / viscoelasticity / plant modelling
© M. Ptashnyk and B. Seguin. Published by EDP Sciences, SMAI 2017
This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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