Abstract
Wind turbine structures need to be designed with careful consideration of the fatigue strength and loading on critical load-bearing components. Each material in the various components of a wind turbine will potentially use different damage models to map the cyclic fatigue loadings into progressive deterioration of the material. In most cases, linear damage models using a Miner’s Rule type approach are prevalent in design. The loadings of a particular turbine can be described as a function of the inflow conditions, which are considered to be weakly stationary for short periods, typically 10 minutes. These characteristic response statistics of the turbine are aggregated into a long-term distribution of loads using the theory of random variables and probability distribution functions. The long-term distribution is applied to the damage model to produce an estimate of fatigue lifetime. The design criteria require that the estimated stresses be amplified by safety factors to account for unfavourable deviations of action and material properties, as well as modeling uncertainties.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
