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Debonding of cellular structures under shear deformation

Safar, Alexander, Wyatt, Hayley Louise and Mihai, Loredana Angela 2017. Debonding of cellular structures under shear deformation. Presented at: 25th Conference of the UK Association for Computational Mechanics, University of Birmingham, Birmingham, UK, 11-13 April 2017.

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Abstract

Many natural materials at millimetre scale are cellular structures, while at micrometre scale, the cell walls are fibrous elastic composites (e.g. plant stems, vegetables, fruit). Cell separation through debonding of the middle lamella in cell walls is key in explaining some important characteristics or behaviour. To model such phenomena, we consider cellular structures with nonlinear hyperelastic cell walls under large shear deformations and incorporate unilateral contact between neighbouring cells. Numerically, we show that, when finite element models of periodic structures with hexagonal cells are sheared, significant cell separation is captured diagonally across the structure. Our analysis further reveals that separation is less likely between cells with high internal cell pressure than between cells where the internal pressure is low.

Item Type: Conference or Workshop Item (Paper)
Date Type: Completion
Status: Unpublished
Schools: Mathematics
Subjects: Q Science > QA Mathematics
Related URLs:
Date of First Compliant Deposit: 28 February 2017
Last Modified: 26 May 2019 21:46
URI: http://orca.cf.ac.uk/id/eprint/98636

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