A 3D micromechanical study of deformation curves and cell wall stresses in wood under transverse loading

Stefania Fortino (Corresponding Author), Petr Hradil, Lauri I. Salminen, Federica De Magistris

    Research output: Contribution to journalArticleScientificpeer-review

    17 Citations (Scopus)

    Abstract

    The deformation of wood is analyzed using the finite element method to quantify the phenomena in wood cells and cell walls. The deformation curves of computed microstructures are compared to experimental observations in two different loading cases: compression and combination of shear and compression. Simulated and experimental shapes of deformation curves match qualitatively and the deformation shapes exhibit a similar response to change in the loading mode. We quantify the intra-cell-wall stresses to understand the effects of the different layers during the deformation. The results benefit the development of energy efficient mechanical and chemo-mechanical pulping processes for pulp, board, and composite manufacture. In addition, the aspects of cell deformation can be exploited to dismantle the wood to accelerate chemical reactions in biorefinery.
    Original languageEnglish
    Pages (from-to)482-492
    JournalJournal of Materials Science
    Volume50
    Issue number1
    DOIs
    Publication statusPublished - Jan 2015
    MoE publication typeA1 Journal article-refereed

    Keywords

    • lignin
    • secondary wall
    • global coordinate system
    • deformation curve
    • microfibril angle

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