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 language | English |
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Pages (from-to) | 129-140 |
Number of pages | 12 |
Journal | The Journal of Strain Analysis for Engineering Design |
Volume | 45 |
DOIs | |
Publication status | Published - 2010 |
MoE publication type | A1 Journal article-refereed |
Keywords
- wood
- glulam
- hygrothermal stress
- creep
- mechano-sorption
- moisture and heat transfer
- finite element
- ProperTune