On the dynamic stability and efficiency of centrifugal pendulum vibration absorbers with rotating pendulums
Article dans une revue avec comité de lecture
The automotive industry uses centrifugal pendulum vibration absorbers (CPVAs) to reduce vibrations of the transmission system. These passive devices are made of several masses oscillating along a given path relative to a rotor. This work addresses a recent design of CPVA, in which the pendulums are allowed to rotate relatively to the rotor. The dynamic stability of this CPVA and the shifting of its operating point are investigated in this paper. These two aspects, crucial for an optimal vibration reduction, are assessed using an analytic dynamical model based on a perturbation method. The results obtained allow to propose new design guidelines. The validity of the model is confirmed through a comparison with a numerical resolution of the system’s dynamics.
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Article dans une revue avec comité de lectureMAHE, V.; RENAULT, Alexandre; GROLET, Aurélien; MAHE, Hervé; THOMAS, Olivier (Elsevier BV, 2022-09)Rotating machines are often subjected to fluctuating torques, leading to vibrations of the rotor and finally to premature fatigue and noise pollution. This work addresses a new design of centrifugal pendulum vibration ...
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