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Structure-€“function relationships in hardwood: Insight from micromechanical modelling
University of Glasgow, UK.
Vienna University of Technology, Austria.ORCID iD: 0000-0002-7829-4630
2014 (English)In: Journal of Theoretical Biology, ISSN 0022-5193, E-ISSN 1095-8541, Vol. 345, 78-91 p.Article in journal (Refereed) Published
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Abstract [en]

Abstract A micromechanical model is presented that predicts the stiffness of wood tissues in their three principal anatomical directions, across various hardwood species. The wood polymers cellulose, hemicellulose, and lignin, common to all wood tissues, serve as the starting point. In seven homogenisation steps, the stiffnesses of these polymers are linked to the macroscopic stiffness. The good agreement of model predictions and corresponding experimental data for ten different European and tropical species confirms the functionality and accuracy of the model. The model enables investigating the influence of individual microstructural features on the overall stiffness. This is exploited to elucidate the mechanical effects of vessels and ray cells. Vessels are shown to reduce the stiffness of wood at constant overall density. This supports that a trade-off exists between the hydraulic efficiency and the mechanical support in relation to the anatomical design of wood. Ray cells are shown to act as reinforcing elements in the radial direction.

Place, publisher, year, edition, pages
2014. Vol. 345, 78-91 p.
Keyword [en]
Wood mechanics, Ray and vessel microstructure, Multiscale modelling, Hardwood cell structure
National Category
Wood Science Composite Science and Engineering
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology; Technology (byts ev till Engineering), Civil engineering
Identifiers
URN: urn:nbn:se:lnu:diva-51212DOI: 10.1016/j.jtbi.2013.12.013OAI: oai:DiVA.org:lnu-51212DiVA: diva2:913870
Available from: 2016-03-22 Created: 2016-03-22 Last updated: 2016-03-23Bibliographically approved

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Publisher's full texthttp://www.sciencedirect.com/science/article/pii/S002251931300564X

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Bader, Thomas K.
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Citation style
  • apa
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  • vancouver
  • Other style
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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  • asciidoc
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