Modelling the hygrothermal stress in curved glulam beams

Huazhang Zhou, Enchun Zhu, Stefania Fortino, Tomi Toratti

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    8 Citations (Scopus)

    Abstract

    Variations of relative humidity and temperature result in moisture and temperature gradients in wood, which induce stress perpendicular to grain and may even cause cracking of the wood. To address the problem, a sequentially coupled three-dimensional (3D) finite element procedure was developed for investigation of hygrothermal stress in glulam beams, in which moisture and heat transfer were taken into consideration, and the hygrothermal deformation, creep, and mechanosorption were also included. The moisture content, temperature, and stress distributions in glulam beams were modelled successfully. The study provides insight into the mechanism of hygrothermal stress in glulam and also provides useful reference to the design of glulam structures and the design of lamina stacking sequence in production of glulam.
    Original languageEnglish
    Pages (from-to)129-140
    Number of pages12
    JournalThe Journal of Strain Analysis for Engineering Design
    Volume45
    DOIs
    Publication statusPublished - 2010
    MoE publication typeA1 Journal article-refereed

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    Keywords

    • wood
    • glulam
    • hygrothermal stress
    • creep
    • mechano-sorption
    • moisture and heat transfer
    • finite element
    • ProperTune

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