Due to local resonances, high vibration levels occur frequently in high-speed train floor, which impact on the ride comfort negatively. A method control excessive with multiple dynamic absorbers (DVAs) is presented. Firstly, possible causes of are investigated operational and modal tests. Then a model vehicle body DVAs established based superposition method. It found that strong peak at low fre...

Abstract   In vibratory systems, linear and nonlinear vibration absorbers can be used to suppress the primary and super-harmonic resonance responses. In this paper, the behavior of a nonlinear system with a nonlinear absorber, under the primary and super-harmonic resonances is investigated. The stiffnesses of the main system and the absorber are cubically nonlinear and the dampers are linear. M...

Rotating machines are often subjected to fluctuating torques, leading vibrations of the rotor and finally premature fatigue noise pollution. This work addresses a new design centrifugal pendulum vibration absorbers (CPVAs), used reduce in an automotive transmission line. These passive devices, composed several masses oscillating along trajectory relative rotor, here tuned at subharmonic targete...