Article (Scientific journals)
Phase resonance nonlinear modes of mechanical systems
Volvert, Martin; Kerschen, Gaëtan
2021In Journal of Sound and Vibration, 511, p. 116355
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Keywords :
Nonlinear Dynamics; Phase resonance; Modal analysis
Abstract :
[en] The resonances of forced dynamical systems occur when either the amplitude of the frequency response undergoes a local maximum (amplitude resonance) or phase lag quadrature takes places (phase resonance). This study focuses on the phase resonance of nonlinear mechanical systems subjected to single-point, single-harmonic excitation. In this context, the main contribution of this paper is to develop a computational framework which can predict the mode shapes and oscillation frequencies at phase resonance. The resulting nonlinear modes are termed phase resonance nonlinear modes (PRNMs). A key property of PRNMs is that, besides primary resonances, they can accurately characterize superharmonic, subharmonic and ultra-subharmonic resonances for which, as shall be shown in this paper, phase lags at resonance may be different from 𝜋∕2. The proposed developments are demonstrated using one- and two-degree-of-freedom systems featuring a cubic nonlinearity.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Volvert, Martin  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Kerschen, Gaëtan  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Language :
English
Title :
Phase resonance nonlinear modes of mechanical systems
Publication date :
27 October 2021
Journal title :
Journal of Sound and Vibration
ISSN :
0022-460X
eISSN :
1095-8568
Publisher :
Elsevier, United States
Volume :
511
Pages :
116355
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 09 August 2021

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