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Computational and experimental analysis of timber beams with different types of flaws
Department of Mechanical Engineering, Linnaeus University, 351 95 Växjö, Sweden.
Department of Structural Mechanics and Department of Steel and Timber Structures, Slovak University of Technology in Bratislava, Radlinského 11, 810 05 Bratislava, Slovak Republic.
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: 0000-0002-0145-080x
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2020 (English)In: Fracture and damage mechanics: Theory, Simulation and Experiment / [ed] Luis Rodríguez-Temblequecc, Ferri M H Aliabadi, American Institute of Physics (AIP), 2020, article id 020036Conference paper, Published paper (Refereed)
Abstract [en]

This work was focused on the experimental testing and finite element analysis (FEA) of timber beams with and without flaws (different types of cracks and hole). The aim was analysing the effect of flaws on their load-carrying capacity. This topic is important for designers of timber constructions, since even today there is still a lack of knowledge in the field of fracture mechanics of wood. The results from experimental testing and numerical simulations were discussed in this paper. Two wood products were analysed, namely, sawn and glued laminated beams (glulam beams) and three types of flaws were considered for both products i.e. a vertical crack, an oblique crack and a circular hole. In addition for glulam beams the horizontal crack in the glue line was considered. Four-point bending test was created for experimental testing considering quasi-brittle characteristic of wood. 4 samples for each type of beam, 36 in total. XFEM (Extended Finite Element Method) was used for finite element analysis of beams with considering orthotropic-elastic properties for glulam beams were considered and The results of mechanical tests and FEA gave us an overview on how different types of flaws influence the load-carrying capacity of sawn and glulam beams and with what accuracy we can simulate cracks in wood using computational method.

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2020. article id 020036
Series
AIP conference proceedings, ISSN 0094-243X, E-ISSN 1551-7616 ; 2309
National Category
Wood Science
Research subject
Wood Science and Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-82498DOI: 10.1063/5.0034413Scopus ID: 2-s2.0-85098951054OAI: oai:DiVA.org:ltu-82498DiVA, id: diva2:1519501
Conference
19th International Conference on Fracture and Damage Mechanics, 15-17 September, 2020, Mallorca, Spain (Virtual)
Note

Finansiär: VEGA project (1/1186/12), Nadácia Tatra banky

ISBN för värdpublikation: 978-0-7354-4045-6

Available from: 2021-01-19 Created: 2021-01-19 Last updated: 2022-06-30Bibliographically approved

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Berg, SvenEkevad, Mats

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