Wind turbine tower collapse due to flange failure: FEM and DOE analyses
| Autor: | Mar Alonso-Martínez, Jose M. Adam, Felipe Pedro Álvarez-Rabanal, Juan José del Coz Díaz |
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| Rok vydání: | 2019 |
| Předmět: |
INGENIERIA DE LA CONSTRUCCION
Failure 09.- Desarrollar infraestructuras resilientes promover la industrialización inclusiva y sostenible y fomentar la innovación Base (geometry) Collapse Collapse (topology) 020101 civil engineering 02 engineering and technology Flange Turbine 0201 civil engineering 0203 mechanical engineering General Materials Science Wind power business.industry Design of experiments General Engineering Structural engineering Finite element method Finite element modelling 020303 mechanical engineering & transports business Tower Wind tower Geology |
| Zdroj: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname Scopus RUO. Repositorio Institucional de la Universidad de Oviedo |
| ISSN: | 1350-6307 |
| Popis: | [EN] Although a large number of papers have been published to date on failures in wind turbines, most of them have focused on blade failures and less attention has been paid to the tower failures. This paper analyses the causes that led to the failure of one element that finally caused the whole tower to collapse. A diagnosis of the cause of the failure was carried out after an initial on-site inspection, when the origin of the failure appeared to be in the flange that joined the tower to its base. An experimental program was carried out to analyze the characteristics of the steel in the area nearest to the flange. A non-linear simulation was then performed by the finite element method (FEM) of the flange area where the failure had occurred, including the bolts, their pre-stressing forces and the contact between the joined surfaces. In order to study the influence of different variables on the flange's structural response, a method based on the Design of Experiments (DOE) was used on the FEM model. Finally, the main lessons learnt from the experience are given with the aim of contributing to improving the design and construction of wind turbine towers. The authors are grateful for the collaboration of the GICONSIME Research Group at the University of Oviedo and COMONOR Ltd. for providing useful information on the tower failure. The authors also acknowledge funding source of the Research Projects FC-15-GRUPIN14-004 and GRUPIN18 IDI/2018/000221, both partial funding from European Founds (FEDER). Finally, the authors would also like to thank Swanson Analysis Inc. for the use of ANSYS University Research programs as well as the Workbench simulation environment. |
| Databáze: | OpenAIRE |
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