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Finite element analysis of bending stiffness for cross-laminated timber with varying board width
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0002-4686-4010
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0002-0900-5110
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0002-0145-080x
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0001-9196-0370
2019 (English)In: Wood Material Science & Engineering, ISSN 1748-0272, E-ISSN 1748-0280, Vol. 14, no 6, p. 392-403Article in journal (Refereed) Published
Abstract [en]

ross laminated timber (CLT) is a wood panelling building system that is used in construction, e.g. for floors, walls and beams. Because of the increased use of CLT, it is important to have accurate simulation models. CLT systems are simulated with one-dimensional and two-dimensional (2D) methods because they are fast and deliver practical results. However, because non-edge-glued panels cannot be modelled under 2D, these results may differ from more accurate calculations in three dimensions (3D). In this investigation, CLT panels with different width-to-thickness ratios for the boards have been simulated using the finite element method. The size of the CLT-panels was 3.0 m × 3.9 m and they had three and five laminate layers oriented 0°–90°–0° and 0°–90°–0°–90°–0°. The thicknesses of the boards were 33.33, 40.0, and 46.5 mm. The CLT panel deformation was compared by using a distributed out-of-plane load. Results showed that panels with narrow boards were less stiff than wide boards for the four-sided support setup. The results also showed that 2D models underestimate the displacement when compared to 3D models. By adjusting the stiffness factor k88, the 2D model displacement became more comparable to the 3D model.

Place, publisher, year, edition, pages
Taylor & Francis, 2019. Vol. 14, no 6, p. 392-403
Keywords [en]
Cross laminated timber, finite element analysis, board width, out-of-plane loading
National Category
Wood Science Other Mechanical Engineering
Research subject
Wood Science and Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-73140DOI: 10.1080/17480272.2019.1587506ISI: 000489177400002Scopus ID: 2-s2.0-85062711678OAI: oai:DiVA.org:ltu-73140DiVA, id: diva2:1294670
Note

Validerad;2019;Nivå 2;2019-10-10 (johcin)

Available from: 2019-03-08 Created: 2019-03-08 Last updated: 2019-10-28Bibliographically approved

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Berg, SvenTuresson, JonasEkevad, MatsHuber, Johannes Albert Josef

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