Frequency Domain Fatigue

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Validation: Blyth• very good comparison• wave influence low• nearly no resonance• fatigue not really an issue• only turbine to get data from• apply on real design with more fatigue
Design comparison: Egmond• design of NM92• 2.75 MW turbines• nat. freq.: 0.31Hz• NM92 abandoned• Available for study
Page 1: Frequency DomainFatiguein the Desig
Page 4 and 5: Current method: Time Domain• load
Page 6 and 7: Offshore contractorWind turbine man
Page 8 and 9: Offshore: Frequency Domainwavespect
Page 10 and 11: Frequency Domain Calculations• Ca
Page 12 and 13: New methodRequirement:• Leave con
Page 14 and 15: Tower modelling (1/2)F top• any F
Page 16 and 17: Frequency domain wind stressInputsp
Page 18 and 19: Tower modelling (2/2)• same FEM p
Page 20 and 21: Validation: Blyth• EU-project OWT
Page 24 and 25: Design comparison: Egmond• wave s
Page 26 and 27: Conclusions• The method works!•

Frequency Domain Fatigue

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