non-linear system identification; Constant Level Identification; Rayleigh-Ritz method
Abstract :
[en] The Constant Level Identification (CLI) method for nonlinear dynamical systems has
been shown to identify accurately a wide variety of systems with discrete degrees of
freedom. In this paper, the method is applied to a continuous nonlinear system, namely
a simulated model of a vibrating beam attached to a nonlinear spring. A Rayleigh-Ritz
series representation of the beam is assumed in order to extract the desired number of
modal responses. Then, a combination of modal and physical coordinates are used in
the identification process. It is shown that the CLI method can accurately capture the
shape of the nonlinearity in the system.
Disciplines :
Mechanical engineering
Author, co-author :
Dimitriadis, Grigorios ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale
Cooper, Jonathan E; University of Manchester > School of Engineering
Language :
English
Title :
Identification of the nonlinear function in a vibrating nonlinear beam
Publication date :
April 2002
Event name :
3rd International Conference on Identification in Engineering Systems
Event organizer :
University of Wales Swansea
Event place :
Swansea, United Kingdom
Event date :
du 15 au 17 avril 2002
Audience :
International
Main work title :
Proceedings of the Third International Conference on Identification in Engineering Systems
