Abstract
A rigorous numerical model, describing a wind turbine structure and subsoil, may contain thousands of degrees of freedom, making the approach computationally inefficient for fast time domain analysis. In order to meet the requirements of real-time calculations, the dynamic impedance of the foundation from a rigorous analysis can be formulated into a so-called lumped-parameter model consisting of a few springs, dashpots and point masses which are easily implemented into aeroelastic codes. In this paper, the quality of consistent lumped-parameter models of rigid surface footings and mono piles is examined. The optimal order of the models is determined and implemented into the aeroelastic code HAWC2, where the dynamic response of a 5.0 MW wind turbine is evaluated. In contrast to the fore-aft vibrations, the inclusion of soil-structure interaction is shown to be critical for the side-side vibrations of the wind turbine structure.
| Original language | English |
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| Title of host publication | Numerical Methods in Geotechnical Engineering : proceedings of the 8th european conference on numerical methods in geotechnical engineering, Delft, the Netherlands,18-20 June 2014 |
| Editors | Michael A. Hicks, Ronald B. J. Brinkgreve, Alexander Rohe |
| Number of pages | 6 |
| Publisher | CRC Press |
| Publication date | 2014 |
| Pages | 1111-1116 |
| ISBN (Print) | 978-1-138-00146-6 |
| Publication status | Published - 2014 |
| Event | The European Conference on Numerical Methods in Geotechnical Engineering - Delft, Netherlands Duration: 18 Jun 2014 → 20 Jun 2014 Conference number: 8 |
Conference
| Conference | The European Conference on Numerical Methods in Geotechnical Engineering |
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| Number | 8 |
| Country/Territory | Netherlands |
| City | Delft |
| Period | 18/06/2014 → 20/06/2014 |