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A finite element study of drying distortion in timber containing compression wood
Chalmers University of Technology, Sweden.ORCID iD: 0000-0001-5591-1045
1999 (English)In: Wood Drying Research & Technology for Sustainable Forestry Beyond 2000, University of Stellenbosch , 1999, p. 149-158Conference paper, Published paper (Refereed)
Abstract [en]

In timber exposed to moisture variations, shape instability is a serious problem since it can make the wood products obtained unsuitable for construction purposes. Two characteristics of wood are that its behaviour is. strongly orthotropic and that it is very sensitive to variation in moisture. In addition, wood is characterized by variation in its properties from pith to bark. A further important property of wood which affects its behaviour is its spiral grain. In addition, intimber containing much compression wood, drying distortion is highly dependent upon where the compression wood is located in the board. The present studyconcerns an experimental investigation of density, grain angles, shrinkage parameters and longitudinal elastic modulus in a number of spruce boardscontaining compression wood. On the basis of the data obtained, numerical simulations were carried out to determine the deformations that developed in the boards during changes in moisture. The knowledge thus obtained can facilitate more effective use of the raw material through enabling boards with properties yielding poor shape stability to be sorted out.

Place, publisher, year, edition, pages
University of Stellenbosch , 1999. p. 149-158
National Category
Engineering and Technology Wood Science
Research subject
Technology (byts ev till Engineering), Civil engineering
Identifiers
URN: urn:nbn:se:lnu:diva-41238ISI: 000082204800020OAI: oai:DiVA.org:lnu-41238DiVA, id: diva2:801652
Conference
6th International IUFRO Wood Drying Conference, University of Stellenbosch, South Africa, January 25-28, 1999
Available from: 2015-04-09 Created: 2015-03-22 Last updated: 2016-05-03Bibliographically approved

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Ormarsson, SigurdurPetersson, Hans

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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
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  • html
  • text
  • asciidoc
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