Modelling the hygrothermal stress in curved glulam beams

Huazhang Zhou, Enchun Zhu, Stefania Fortino, Tomi Toratti

Research output: Contribution to journalArticleScientificpeer-review

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

Fingerprint

Curved Beam
Moisture
Wood
Modeling
Content Distribution
Lamina
Moisture Content
Relative Humidity
Stacking
Cracking
Creep
Stress Distribution
Temperature Distribution
Thermal gradients
Perpendicular
Stress concentration
Heat Transfer
Atmospheric humidity
Temperature distribution
Finite Element

Keywords

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

Cite this

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title = "Modelling the hygrothermal stress in curved glulam beams",
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.",
keywords = "wood, glulam, hygrothermal stress, creep, mechano-sorption, moisture and heat transfer, finite element, ProperTune",
author = "Huazhang Zhou and Enchun Zhu and Stefania Fortino and Tomi Toratti",
note = "Project code: 17546",
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pages = "129--140",
journal = "The Journal of Strain Analysis for Engineering Design",
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Modelling the hygrothermal stress in curved glulam beams. / Zhou, Huazhang; Zhu, Enchun; Fortino, Stefania; Toratti, Tomi.

In: The Journal of Strain Analysis for Engineering Design, Vol. 45, 2010, p. 129-140.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Modelling the hygrothermal stress in curved glulam beams

AU - Zhou, Huazhang

AU - Zhu, Enchun

AU - Fortino, Stefania

AU - Toratti, Tomi

N1 - Project code: 17546

PY - 2010

Y1 - 2010

N2 - 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.

AB - 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.

KW - wood

KW - glulam

KW - hygrothermal stress

KW - creep

KW - mechano-sorption

KW - moisture and heat transfer

KW - finite element

KW - ProperTune

U2 - 10.1243/03093247JSA563

DO - 10.1243/03093247JSA563

M3 - Article

VL - 45

SP - 129

EP - 140

JO - The Journal of Strain Analysis for Engineering Design

JF - The Journal of Strain Analysis for Engineering Design

SN - 0309-3247

ER -