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Modelling the viscoelastic mechanosorptive behaviour of Norway spruce under long-term compression perpendicular to the grain.
- Source :
-
Holzforschung: International Journal of the Biology, Chemistry, Physics, & Technology of Wood . Aug2019, Vol. 73 Issue 8, p715-725. 11p. 1 Color Photograph, 3 Diagrams, 6 Charts, 3 Graphs. - Publication Year :
- 2019
-
Abstract
- The effects of variation in humidity coupled with long-term loading give rise to dimensional changes and creep effects in wooden elements. Many wooden products such as cross-laminated timber (CLT) plates as well as many common structural details used in timber engineering are vulnerable to variations in moisture content (MC) as well as to creep effects. This paper addresses the long-term effects in the material modelling of timber by the finite element method (FEM), also considering the viscoelastic and mechanosorptive effects in wood. The model was calibrated using both relaxation tests and creep tests. The results from both long-term compression perpendicular- to-grain tests (relaxation and creep) performed on glulam (GL30c) from Norway spruce (Picea abies) with moisture control are presented in this paper. The material model considers the effect of loading and moisture changes. For realistic comparison, the pith location of each lamella was specified in the numerical analyses. Ultimately, a comparison between the numerical results and the experimental results has been provided, exhibiting an overall good estimation of timber response. [ABSTRACT FROM AUTHOR]
- Subjects :
- *NORWAY spruce
*FINITE element method
*GRAIN
*NUMERICAL analysis
Subjects
Details
- Language :
- English
- ISSN :
- 00183830
- Volume :
- 73
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Holzforschung: International Journal of the Biology, Chemistry, Physics, & Technology of Wood
- Publication Type :
- Academic Journal
- Accession number :
- 137625704
- Full Text :
- https://doi.org/10.1515/hf-2018-0218