Structure-based models for determining the mechanical properties of plant cell walls

Kha, Hung, Tuble, Sigrid, Kalyanasundaram, Shankar and Williamson, Richard E. (2007). Structure-based models for determining the mechanical properties of plant cell walls. In: Martin Veidt, Faris Albermani, Bill Daniel, John Griffiths, Doug Hargreaves, Ross McAree, Paul Meehan and Andy Tan, Proceedings of the 5th Australasian Congress on Applied Mechanics (ACAM 2007). 5th Australasian Congress on Applied Mechanics (ACAM 2007), Brisbane, Australia, (435-440). 10-12 December, 2007.

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Author Kha, Hung
Tuble, Sigrid
Kalyanasundaram, Shankar
Williamson, Richard E.
Title of paper Structure-based models for determining the mechanical properties of plant cell walls
Conference name 5th Australasian Congress on Applied Mechanics (ACAM 2007)
Conference location Brisbane, Australia
Conference dates 10-12 December, 2007
Proceedings title Proceedings of the 5th Australasian Congress on Applied Mechanics (ACAM 2007)
Place of Publication Brisbane
Publisher Engineers Australia
Publication Year 2007
Year available 2008
Sub-type Fully published paper
ISBN 0 8582 5862 5
Editor Martin Veidt
Faris Albermani
Bill Daniel
John Griffiths
Doug Hargreaves
Ross McAree
Paul Meehan
Andy Tan
Volume 1
Start page 435
End page 440
Total pages 6
Collection year 2007
Language eng
Abstract/Summary The mechanical properties of the primary cell wall strongly influence plant growth and the final shapes of plant cells. Little attention has been paid to the relationship between the composite structure of the wall and its stiffness properties. In this study, a finite element model has been developed to predict the effective Young’s modulus of elasticity for a “simplified” primary wall composed of microfibrils cross-linked by hemicelluloses (typically xyloglucans). The assembled cellulose-xyloglucan network forms the input for finite element analysis once the two polymer types and the bonds between them are assigned realistic mechanical properties . The size of the model was varied to obtain a Representative Volume Element so that homogenization techniques could be developed for further investigations. The Young’s modulus of elasticity decreases as the dimensions of the simulated wall increase but then settles to a steady value.
Subjects 290501 Mechanical Engineering
Keyword cell wall
finite element analysis (FEA)
cellulose microfibril (CMF)
xyloglucan (XG)
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

 
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Created: Wed, 12 Mar 2008, 15:22:54 EST by Laura McTaggart on behalf of School of Engineering