Article (Scientific journals)
Tracking amplitude extrema of nonlinear frequency responses using the harmonic balance method
Raze, Ghislain; Volvert, Martin; Kerschen, Gaëtan
2024In International Journal for Numerical Methods in Engineering, 125 (2), p. 7376
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Keywords :
alternating frequency-time; amplitude resonance; bordered system; companion matrix; extremum tracking; harmonic balance
Abstract :
[en] This work proposes a novel efficient method to track the evolution of amplitude extrema featured by frequency responses of nonlinear systems using the harmonic balance method. Means to compute the amplitude of a Fourier series are first outlined, and a set of equations characterizing a local extremum of a nonlinear frequency response amplitude curve is derived. Efficient numerical procedures are used to evaluate these equations and their derivatives (including second‐order ones) to embed them in a predictor‐corrector continuation framework. The proposed approach is illustrated on three examples of increasing complexity, namely a Helmholtz–Duffing oscillator, a two‐degree‐of‐freedom system with a modal interaction, and a doubly clamped von Kàrmàn beam with a nonlinear tuned vibration absorber.
Disciplines :
Aerospace & aeronautics engineering
Mechanical engineering
Author, co-author :
Raze, Ghislain  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Volvert, Martin  ;  Université de Liège - ULiège > Aérospatiale et Mécanique (A&M)
Kerschen, Gaëtan  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Language :
English
Title :
Tracking amplitude extrema of nonlinear frequency responses using the harmonic balance method
Publication date :
30 January 2024
Journal title :
International Journal for Numerical Methods in Engineering
ISSN :
0029-5981
eISSN :
1097-0207
Publisher :
Wiley
Volume :
125
Issue :
2
Pages :
e7376
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Funding text :
Ghislain Raze is a Postdoctoral Researcher of the Fonds de la Recherche Scientifique - FNRS which is gratefully acknowledged.
Commentary :
This is the accepted version of the following article: Raze G, Volvert M, Kerschen G. Tracking amplitude extrema of nonlinear frequency responses using the harmonic balance method. Int J Numer Methods Eng. 2023;e7376. doi: 10.1002/nme.7376, which has been published in final form at https://onlinelibrary.wiley.com/doi/10.1002/nme.7376.
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