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Practical Computation of Nonlinear Normal Modes Using Numerical Continuation Techniques
Peeters, Maxime; Viguié, Régis; Kerschen, Gaëtan et al.
2007In International Workshop: Advancements in Design Optimization of Materials, Structures and Mechanical Systems, Xi'An, 2007
 

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Keywords :
Nonlinear Normal Modes; Continuation techniques
Abstract :
[en] The concept of nonlinear normal modes (NNMs) is considered in the present paper. One reason of the still limited use of NNMs in structural dynamics is that their computation is often regarded as impractical. However, when resorting to numerical algorithms, we show that the NNM computation is possible with limited implementation effort, which paves the way to a practical method for determining the NNMs of nonlinear mechanical systems. The proposed algorithm relies on two main techniques, namely a shooting procedure and a method for the continuation of NNM motions. The algorithm is demonstrated using two different mechanical systems, a nonlinear two-degree-of-freedom system and a nonlinear cantilever beam discretized by the finite element method.
Disciplines :
Mechanical engineering
Author, co-author :
Peeters, Maxime ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures
Viguié, Régis ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures
Kerschen, Gaëtan  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Golinval, Jean-Claude  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures
Language :
English
Title :
Practical Computation of Nonlinear Normal Modes Using Numerical Continuation Techniques
Publication date :
2007
Event name :
International Workshop: Advancements in Design Optimization of Materials, Structures and Mechanical Systems
Event organizer :
Nortwestern Polytechnical University
Event place :
Xi'An, China
Event date :
du 17 au 20 décembre 2007
Audience :
International
Main work title :
International Workshop: Advancements in Design Optimization of Materials, Structures and Mechanical Systems, Xi'An, 2007
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