The influence of flexibility within multibody modeling of multi-megawatt wind turbine gearboxes
نویسنده
چکیده
This work discusses the influence of flexibility within the multibody approach for wind-turbine gearbox modeling and validates them, by means of a generic gearbox calculation consisting of one planetary gear stage and two helical stages. First the state-of-the-art rigid multibody modeling with discrete flexibility is discussed. Secondly flexible multibody modeling by means of reduced finite element models is discussed. The different structures for coupling the reduced finite element structure to the multibody gearbox model are investigated. The modal behavior of a fully flexible model of the high speed helical gear stage is determined and compared to the rigid model. A detailed estimation of the influence of the flexibility of the different components of the planetary stage is performed. Finally a flexible planet carrier is introduced in the full gearbox model and a comparison with the rigid full gearbox model is made
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