Abstract
In the present paper calibration of partial safety factors for fatigue design of wind
turbine blades is considered. The stochastic models for the physical uncertainties
on the material properties are based on constant amplitude fatigue tests and the
uncertainty on Miners rule for linear damage accumulation is determined from
variable amplitude fatigue tests with the Wisper and Wisperx spectra. The
statistical uncertainty for the assessment of the fatigue loads is also investigated.
The partial safety factors are calibrated for design load case 1.2 in IEC 61400-1.
The fatigue loads are determined from rainflow-counting of simulated time series
for a 5MW reference wind turbine [1]. A possible influence of a complex stress
state in the blade is not taken into account and only longitudinal stresses are
considered.
turbine blades is considered. The stochastic models for the physical uncertainties
on the material properties are based on constant amplitude fatigue tests and the
uncertainty on Miners rule for linear damage accumulation is determined from
variable amplitude fatigue tests with the Wisper and Wisperx spectra. The
statistical uncertainty for the assessment of the fatigue loads is also investigated.
The partial safety factors are calibrated for design load case 1.2 in IEC 61400-1.
The fatigue loads are determined from rainflow-counting of simulated time series
for a 5MW reference wind turbine [1]. A possible influence of a complex stress
state in the blade is not taken into account and only longitudinal stresses are
considered.
| Original language | English |
|---|---|
| Publication date | 2010 |
| Number of pages | 1 |
| Publication status | Published - 2010 |
| Event | The European Wind Energy Conference & Exhibition, EWEC 2010 - Warszawa, Poland Duration: 20 Apr 2010 → 23 Apr 2010 http://www.ewec2010.info/ |
Conference
| Conference | The European Wind Energy Conference & Exhibition, EWEC 2010 |
|---|---|
| Country/Territory | Poland |
| City | Warszawa |
| Period | 20/04/2010 → 23/04/2010 |
| Internet address |
Bibliographical note
Published on a USB.Keywords
- Calibration
- Partial Safety Factors
- Wind Turbine Blades