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Coupled two-dimensional modeling of viscoelastic creep of wood
University of Borås, Faculty of Textiles, Engineering and Business. (SAMHÄLLSBYGGNAD)ORCID iD: 0000-0001-7658-4194
University of Borås, Faculty of Textiles, Engineering and Business. (SAMHÄLLSBYGGNAD)ORCID iD: 0000-0001-7792-0153
2018 (English)In: Wood Science and Technology, ISSN 0043-7719, E-ISSN 1432-5225, Vol. 52, no 1, p. 29-43Article in journal (Refereed) Published
Abstract [en]

Three coupled two-dimensional viscoelastic creep models for orthotropic material are analyzed. The models of different complexity are mathematically formulated and implemented in a finite element software. Required viscoelastic material parameters are determined by calibration procedure, where numerical results are compared against experimentally obtained viscoelastic strains caused by tensile or shear loading. Finally, a comparison method is used to evaluate the accuracy of strain predictions of each particular model. The analysis shows that all the models are able to accurately predict viscoelastic creep simultaneously in two perpendicular directions for various periods of time and wood species. Calculated numerical values of the viscoelastic material parameters suitable for the three models and wood species, i.e., Douglas fir (Pseudotsuga menziesii), Norway spruce (Picea abies), Japanese cypress (Chamaecyparis obtusa), and European beech (Fagus sylvatica L.), under constant tensile loading are also given.

Place, publisher, year, edition, pages
Springer, 2018. Vol. 52, no 1, p. 29-43
Keywords [en]
time-dependence, deformation kinetics, rheological model, chemical-kinetics, grain
National Category
Other Civil Engineering
Identifiers
URN: urn:nbn:se:hb:diva-13637DOI: 10.1007/s00226-017-0944-3ISI: 000419587400002Scopus ID: 2-s2.0-85028327918OAI: oai:DiVA.org:hb-13637DiVA, id: diva2:1181824
Available from: 2018-02-09 Created: 2018-02-09 Last updated: 2018-02-13Bibliographically approved

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Huč, SabinaSvensson, Staffan

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CiteExportLink to record
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  • apa
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