Lead-lag dynamics of a rotor with stick-slip nonlinearity

dc.contributor.author Andersch, P.
dc.contributor.author Hajek, M.
dc.date.accessioned 2018-05-31T09:10:33Z
dc.date.available 2018-05-31T09:10:33Z
dc.date.issued 2015
dc.description.abstract An assessment of a frictional helicopter blade attachment with regard to its influence on the dynamics of the in-plane blade motion is presented. For detailed system analysis, a 3D finite element model with contact modeling has been created and validated using preexisting test data. Using the insights gained from 3D finite element simulations, a reduced order model suitable for dynamical simulations is derived and parameterized. Eventually, the reduced order model for the blade attachment is inserted into a hingeless dynamical rotor model with elastic coupling. The influence of the blade attachment on lead-lag dynamic behavior is investigated using the developed model and multiple configurations are compared to each other to identify the effects of the nonlinear blade attachment model on lead-lag frequency and damping ratio as well as elastic coupling prevalent in the hingeless rotor configuration
dc.identifier.other ERF2015_0047_paper
dc.identifier.uri http://hdl.handle.net/20.500.11881/3564
dc.language.iso en
dc.subject.other Dynamics
dc.title Lead-lag dynamics of a rotor with stick-slip nonlinearity
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