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Reliability over time of wind turbines steel towers subjected to fatigue
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  • Journal title : Wind and Structures
  • Volume 23, Issue 1,  2016, pp.75-90
  • Publisher : Techno-Press
  • DOI : 10.12989/was.2016.23.1.075
 Title & Authors
Reliability over time of wind turbines steel towers subjected to fatigue
Berny-Brandt, Emilio A.; Ruiz, Sonia E.;
 Abstract
A probabilistic approach that combines structural demand hazard analysis with cumulative damage assessment is presented and applied to a steel tower of a wind turbine. The study presents the step by step procedure to compare the reliability over time of the structure subjected to fatigue, assuming: a) a binomial Weibull annual wind speed, and b) a traditional Weibull probability distribution function (PDF). The probabilistic analysis involves the calculation of force time simulated histories, fatigue analysis at the steel tower base, wind hazard curves and structural fragility curves. Differences in the structural reliability over time depending on the wind speed PDF assumed are found, and recommendations about selecting a real PDF are given.
 Keywords
fatigue;structural reliability;binomial Weibull distribution;wind turbine tower;wind speed PDF;
 Language
English
 Cited by
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