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Substructure modelling of full size timber modules
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013).ORCID iD: 0000-0002-0740-4732
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences (from 2013). (Building Technology)ORCID iD: 0000-0003-1638-1023
2023 (English)In: Computational Methods in Wood Mechanics: CompWood 2023, International Center for Numerical Methods in Engineering (CIMNE), 2023, p. 48-Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

From an environmental sustainability point of view, modern construction practices increasingly favorcarbon neutral buildings including those made from timber. Prefabricated timber modules havebecome popular due to their efficient in-house production followed by systematic and rapid on-siteinstallation. Construction companies often use these lightweight modules for residential buildings upto six story when feasible. While several studies are available that simulate stiffness and strength ofshear walls, a major component of the module responsible for transferring shear load and acting asa load bearing wall for vertical loads, e.g [1] and [2] for the EC5 design principles, relatively little workhas been done to analyze the structural performance of entire modules. This is likely due to limitedtime span the construction type has been common practice, practical challenges associated withexperimental tests and numerically demanding simulations of large structures. However, there aresome exceptions, e.g [3].This study introduces the concept of “super elements”, which are developed by condensing theinternal degrees of freedom (DOF:s) of a whole timber module to specified parts of its boundary. Theaim of this study is to reduce the number of DOF:s by using substructuring so that an entire structurecan be analyzed while subjected to external loading. Substructuring is a method of dividing a wholemodel into user defined parts (super elements) and coupling these together to create a global model[4]. The internal DOF:s of the super elements are “condensed” using static condensation, and thesuper elements are then connected to the rest of the model along selected restrained DOF:s [5].Figure 1(a) shows an example of a building with timber modules, while Figure 1(b) illustrates partsof a full-size timber module. Figure 1(c) represents a super element of the module. A simple, linearFE super element is developed for analyzing a part of a whole timber structure and it is coupled tothe rest of the structure only at designated pre-selected nodes. The model is then used to analyzethe response during various load cases applied to the whole structure.

Place, publisher, year, edition, pages
International Center for Numerical Methods in Engineering (CIMNE), 2023. p. 48-
National Category
Building Technologies
Research subject
Construction Engineering
Identifiers
URN: urn:nbn:se:kau:diva-96649ISBN: 978-84-123222-7-9 (print)OAI: oai:DiVA.org:kau-96649DiVA, id: diva2:1795866
Conference
3rd ECCOMAS Thematic conference on Computational Methods in Wood Mechanics (CompWood), Dresden, Germany, September 5-8, 2023.
Available from: 2023-09-11 Created: 2023-09-11 Last updated: 2024-01-02Bibliographically approved

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Maharjan, RajanVessby, Johan

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