Year: 2013
Type: conference-paper
Abstract: Although nonlinear vibration absorbers can absorb disturbances in relatively wide ranges of frequencies due to their increased bandwidth, their performance depends critically on motion amplitude [1,2]. The objective of this paper is to introduce a new nonlinear vibration absorber that is effective in wide ranges of motion amplitudes. This absorber is termed the nonlinear tuned vibration absorber (NLTVA), because its functional form is tailored to the frequency-energy dependence of the considered dynamical instability [3]. This paper shows that bifurcation tracking in parameter space is an effective methodology for ensuring excellent absorber performance. In view of the richness and complexity of nonlinear dynamic phenomena, global analysis using an advanced cell mapping method is then utilized for detecting the different attractors of the dynamics together with their domains of attraction, which, in turn, gives a clear indication of absorber robustness. This design methodology is validated using two numerical examples, namely the mitigation of the primary resonance of a one-degree-of-freedom host system with cubic nonlinearity and the suppression of the limit cycle oscillations of a Van der Pol oscillator.
Source: ORBi (University of Liège)
Authors: Thibaut Detroux, Luc Masset, Gaëtan Kerschen
Institution: University of Liège
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W221820949