Reference : Identification of a Nonlinear Wing Structure Using an Extended Modal Model
Scientific journals : Article
Engineering, computing & technology : Aerospace & aeronautics engineering
http://hdl.handle.net/2268/23159
Identification of a Nonlinear Wing Structure Using an Extended Modal Model
English
Platten, M. F. [Romax Technology > NVH Team > > >]
Wright, J. R. [University of Manchester > School of Mechanical Aerospace and Civil Engineering > > >]
Cooper, J. E. [University of Liverpool > Department of Engineering > > >]
Dimitriadis, Grigorios mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > Intéractions fluide structure et aérodynamique expérimentale >]
2009
Journal of Aircraft
American Institute of Aeronautics and Astronautics
46
5
1614-1626
Yes (verified by ORBi)
International
0021-8669
[en] Ground Vibration Testing ; Nonlinearity ; System Identification
[en] The nonlinear resonant decay method identifies a nonlinear dynamic system using a model based in linear modal space comprising the underlying linear system and a small number of additional terms that represent the nonlinear behavior. In this work, the method is applied to an aircraftlike wing/store/pylon experimental structure that consists of a rectangular wing with two stores suspended beneath it by means of nonlinear pylons with a nominally hardening characteristic in the store rotation degree of freedom. The nonlinear resonant decay method is applied to the system using multishaker excitation. The resulting identified mathematical model features five modes, two of which are strongly nonlinear, one is mildly nonlinear, and two are completely linear. The restoring force surfaces obtained from the mathematical model are in close agreement with those measured from the system. This experimental application of the nonlinear resonant decay method indicates that the method could be suitable for the identification of nonlinear models of aircraft in ground vibration testing.
Researchers ; Professionals
http://hdl.handle.net/2268/23159
10.2514/1.42024
http://pdf.aiaa.org/jaPreview/JA/2009/PVJA42024.pdf

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
23 Journal of Aircraft, 46(5),1614-1626,2009.pdfPublisher postprint6.39 MBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.