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Influence of execution tolerances for friction connections in circular and polygonal towers for wind converters
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering. Delft University of Technology, Faculty of Civil Engineering & Geoscience.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering. Delft University of Technology.ORCID iD: 0000-0003-4791-2341
Institute for Steel Construction, RWTH Aachen University.
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2017 (English)In: Advanced steel construction, ISSN 1816-112X, Vol. 13, no 4, p. 343-360Article in journal (Refereed) Published
Abstract [en]

Friction connections with long open slotted holes have been proven to be a competitive alternative to the conventional flange connections in steel tubular towers for wind energy converters. As full-scale tests are not available, results of Finite Element Analysis (FEA) of the real-scale tower geometry are used in this paper to investigate the influence of tower cross section shape, execution tolerance (gap between the shells) and length of the connection on the bending resistance. Buckling behaviour of the shell in the vicinity of the friction connection in circular and polygonal towers is compared. The friction connection is thoroughly examined and recommendations for execution tolerances are given. The influence of two types of the execution tolerances on the connection strength is considered: inward bended "fingers", leading to inclined gaps, and a parallel gap created by different tower diameters.

Place, publisher, year, edition, pages
Hong Kong Institute of Steel Construction , 2017. Vol. 13, no 4, p. 343-360
National Category
Building Technologies
Research subject
Steel Structures
Identifiers
URN: urn:nbn:se:ltu:diva-67108DOI: 10.18057/IJASC.2017.13.4.2ISI: 000417048600002Scopus ID: 2-s2.0-85038076024OAI: oai:DiVA.org:ltu-67108DiVA, id: diva2:1168803
Note

Validerad;2018;Nivå 2;2017-12-21 (andbra)

Available from: 2017-12-21 Created: 2017-12-21 Last updated: 2018-06-08Bibliographically approved

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