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Resistance of Door Opening in Towers for Wind Turbines
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
University of Coimbra.
University of Coimbra.
2013 (English)In: SEECCM III: 3rd South-East European Conference on Computational Mechanicsan an ECCOMAS and IACM Special Interest Conference / [ed] M. Papadrakakis; M. Kojic; I. Tuncer; V. Papadopoulos, 2013, 312-324 p.Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, a study of resistance of a lower part of a wind tower including a door opening is presented. Nonlinear 3-D shell element models with real geometry of lower tower segment have been used to simulate the thin walled shell structure in order to study the influence of door opening on the strength of the tower. Two possible alternatives for strengthening the door openings were considered: (i) increasing thicknesses of plate around the opening and (ii)stiffening the opening by a stiffener. Buckling analysis and nonlinear analysis were performed to obtain critical buckling modes and strength of the tower segment. Nominal material properties of different steel grades were considered to investigate possibility of using higher strength steels. A parametric study considering possible local shell imperfections according to EN1993-1-6 has been considered. Additionally, comparative studies have been performed based on the FE model without door opening.

Place, publisher, year, edition, pages
2013. 312-324 p.
Keyword [en]
Wind tower, Strength of door openings, Geometry imperfection, Buckling, Nonlinear, Engineering mechanics - Other engineering mechanics
Keyword [sv]
Teknisk mekanik - Övrig teknisk mekanik
National Category
Building Technologies
Research subject
Steel Structures
Identifiers
URN: urn:nbn:se:ltu:diva-32558Scopus ID: 84899545550Local ID: 716fb874-a591-4456-9633-07e37f785125OAI: oai:DiVA.org:ltu-32558DiVA: diva2:1005792
Conference
South-East European Conference on Computational Mechanics : 12/06/2013 - 14/06/2013
Note
Godkänd; 2013; 20130822 (anhtra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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