Article (Scientific journals)
A method for identification of non-linear multi-degree-of-freedom systems
Dimitriadis, Grigorios; Cooper, Jonathan E
1998In Proceedings of the Institution of Mechanical Engineers. Part G, Journal of Aerospace Engineering, 212 (4), p. 287-298
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Keywords :
aeroelasticity; non-linear systems; multi-degree-of-freedom systems; system identification; bilinear stiffness; cubic stiffness; freeplay
Abstract :
[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.
Disciplines :
Aerospace & aeronautics engineering
Mechanical engineering
Author, co-author :
Dimitriadis, Grigorios  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Intéractions fluide structure et aérodynamique expérimentale
Cooper, Jonathan E;  University of Manchester > School of Engineering
Language :
English
Title :
A method for identification of non-linear multi-degree-of-freedom systems
Publication date :
1998
Journal title :
Proceedings of the Institution of Mechanical Engineers. Part G, Journal of Aerospace Engineering
ISSN :
0954-4100
Publisher :
Professional Engineering Publishing, United Kingdom
Volume :
212
Issue :
4
Pages :
287-298
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 27 March 2009

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