Change search
ReferencesLink to record
Permanent link

Direct link
Resistance of Circular and Polygonal Steel Towers for Wind Turbines: Down scale component experiments and Finite element analysis
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
2014 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

With increasing demand of sustainable energy production, the harvesting of wind power by using wind turbines have become increasingly important over the last few decades. Most of the wind turbine towers are made from steel. Towers are an important part of the investment in wind parks and contribute about 20% of costs for the onshore towers. It supports the nacelle and is designed to sustain wind load and load caused by the operation of the wind turbine. This thesis presents results of experimental and numerical investigations on behavior of the steel tubular tower components made of circular and polygonal cross sections focusing on resistance of the door opening. An experimental program was planned to investigate the material and initial geometrical imperfections of the down scale specimens. Investigation of the basic material properties of the down scale specimens was carried out by using coupon specimens cut off from the down scale specimens. Influences of cold forming on the properties of the material were also studied by using coupon specimens with different cold formed angles. 3D scanning laser was used to determine initial geometrical imperfection of the down scale specimens. The measured data was analyzed by Matlab and Gom Inspect software. Results from these experiments were used as input data for the numerical models. Experiments on down scale specimens of the tubular tower with polygonal and circular cross sections were performed in order to investigate structural resistance. Finite element program Abaqus was used to simulate the tested specimens in order to compare their results to the experiments. Elastic, nonlinear geometry and nonlinear materials analyses were performed in order to investigate the ultimate resistance of the down scale specimens. Comparison of resistances of the circular and polygonal cross sections with Eurocode 3 was carried out.

Place, publisher, year, edition, pages
Luleå tekniska universitet, 2014.
Series
Licentiate thesis / Luleå University of Technology, ISSN 1402-1757
Research subject
Steel Structures
Identifiers
URN: urn:nbn:se:ltu:diva-17891Local ID: 5bb64878-1d17-47bb-8f51-4cac8d354ea5ISBN: 978-91-7583-059-9ISBN: 978-91-7583-060-5 (PDF)OAI: oai:DiVA.org:ltu-17891DiVA: diva2:990897
Note
Godkänd; 2014; 20141024 (anhtra); Nedanstående person kommer att hålla licentiatseminarium för avläggande av teknologie licentiatexamen. Namn: Anh Tuan Tran Ämne: Stålbyggnad/Steel Structuring Uppsats: Resistance of Circular and Polygonal Steel Towers for Wind Turbines, Down Scale Component Experiments and Finite Elements Analysis Examinator: Professor Milan Veljkovic, Institutionen för samhällsbyggnad och naturresurser, Luleå tekniska universitet Diskutant: Biträdande Professor Florea Dinu, University in Timisoara, Rumänien Tid: Fredag den 28 november 2014 kl 10.00 Plats: F531, Luleå tekniska universitetAvailable from: 2016-09-29 Created: 2016-09-29Bibliographically approved

Open Access in DiVA

fulltext(56 kB)6 downloads
File information
File name FULLTEXT01.pdfFile size 56 kBChecksum SHA-512
e593c3c053883e35df658add6b4acf384eaeb8c5458de2541e756236ea86218f440f35b7a95be3a4ba9ae73e94e24c912ee9e3951c390004e2705ccdc152484d
Type fulltextMimetype application/pdf
fulltext(12829 kB)4 downloads
File information
File name FULLTEXT02.pdfFile size 12829 kBChecksum SHA-512
0d1473d80d404648ebb3502c7e4fa78a2f607d3c0118edc0b34549c4fab1961a5af6724d3872c6b43bd3f034071742915c8d6f30621b15f041426e257bb52397
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Tran, Anh Tuan
By organisation
Structural and Construction Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 10 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 15 hits
ReferencesLink to record
Permanent link

Direct link