Aeroelasticity; Damping; Non-linear system identification
Abstract :
[en] An energy-based method is proposed to identify damping parameters from time histories
of responses to sets of single-frequency harmonic excitation. The method is intended to be
practically applicable to real structures and is able to identify the value of viscous damping,
Coulomb friction and eventually other forms of non-linear damping models in aeroelastic
systems. The inputs required are simply the accelerometer signals and the forces applied.
It will be shown that if the system is undergoing Limit Cycle Oscillations, no external force
is required for the identification process.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Vio, Gareth A.; University of Sydney > School of Aerospace, Mechanical and Mechatronic Engineering
Dimitriadis, Grigorios ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale
Language :
English
Title :
Computational Identification of Non-Linear Damping in an Aeroelastic System
Publication date :
23 April 2012
Event name :
53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Event organizer :
American Institute of Aeronautics and Astronautics
Event place :
Honolulu, Hawaii, United States
Event date :
from 23-04-2012 to 26-04-2012
Audience :
International
Main work title :
Proceedings of the 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
