Design of Multi-Mode Low-Frequency Vibration Suppressor Based on Dynamic Vibration Absorption Principle

Abstract

Dynamic vibration absorbers (DVA) are commonly studied for their advantage in controlling the low-frequency resonance peaks, but most relevant studies are still at the stage of theoretical innovation such as nonlinearity parameters and active control. Nevertheless, there are few kinds of vibration suppression structures based on dynamic vibration absorption principle. In this paper, therefore, we proposed a novel vibration suppressor inspired by the DVA theory. The vibration of a four-sided simply-supported thin plate attached with the DVAs array was studied by applying the modal superposition method. A preliminary suppressor model was proposed with rubber and steel as its main material, and whose modal frequency is calculated theoretically. Geometric and material parameters of each component were adjusted based on the DVA parameters. The vibration control effect of the suppressors array was verified through simulation and by experiment. Results showed that three resonance peaks were suppressed, and it was obvious after the attachment to the DVAs array or suppressors array. The contact form between the suppressors array and the plate is surface contact, which is different from the point contact between the DVAs array and the plate, therefore the vibration control effect of vibration suppressors array is more obvious.