Energy Localization in Periodic Structures: Application to Centrifugal Pendulum Vibration Absorber

Aurelien Grolet (1) , Alexandre Renault (1) , Olivier Thomas (1)

1 LSIS - Laboratoire des Sciences de l'Information et des Systèmes

In this paper we study the non-linear dynamic of centrifugal pendulum vibration absorbers (CPVA), and we pay a special a ention to localized state solutions. e prediction of such states of vibration, and their stability, is of particular importance because they can lead to inefficient behavior for the CPVA and/or unforeseen stress levels. Using an approximated equation for the pendulums dynamics, we derive initial conditions to put the system in localized states. Following an analytic study of the non-linear normal mode of the system, the resolution of the approximated equation is carried out in the frequency domain using the Harmonic Balance Method and the Asymptotic Numeric Method. For sufficiently low inertia ratio, we show that the system can possess stable localized states.

Mots clés: Nonlinear Dynamic; Centrifugal Pendulum Vibration Absorbers; Localization

Domaines: Mécanique des structures [physics.class-ph]

Aurelien Grolet, Alexandre Renault, Olivier Thomas. Energy Localization in Periodic Structures: Application to Centrifugal Pendulum Vibration Absorber. 17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC2017), Dec 2017, Maui, United States. ⟨hal-02387666⟩