Reference : A method for identification of non-linear multi-degree-of-freedom systems
Scientific journals : Article
Engineering, computing & technology : Mechanical engineering
Engineering, computing & technology : Aerospace & aeronautics engineering
A method for identification of non-linear multi-degree-of-freedom systems
Dimitriadis, Grigorios mailto [Université de Liège - ULiège > Département d'aérospatiale et mécanique > Intéractions fluide structure et aérodynamique expérimentale >]
Cooper, Jonathan E [University of Manchester > School of Engineering > > >]
Proceedings of the Institution of Mechanical Engineers. Part G, Journal of Aerospace Engineering
Professional Engineering Publishing
Yes (verified by ORBi)
United Kingdom
[en] aeroelasticity ; non-linear systems ; multi-degree-of-freedom systems ; system identification ; bilinear stiffness ; cubic stiffness ; freeplay
[en] System identification methods for non-linear aeroelastic systems could find uses in many aeroelastic applications such as validating finite element models and tracking the stability of aircraft during flight flutter testing. The effectiveness of existing non-linear system identification techniques is limited by various factors such as the complexity of the system under investigation and the type of non-linearities present. In this work, a new approach is introduced which can identify multi-degree-of-freedom systems featuring any type of non-linear function, including discontinuous functions. The method is shown to yield accurate identification of three mathematical models of aeroelastic systems containing a wide range of structural non-linearities.
Researchers ; Professionals

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