Design of Hybrid Dynamic Balancer and Vibration Absorber

Y R Wang,C Y Lo

doi:10.1155/2014/397584

Abstract

This study proposed a novel hybrid dynamic balancer and vibration absorber that is cheaper than active dampers and more effective than passive dampers. The proposed damping system does not need to be altered structurally to deal with different damping targets. Rather, the proposed vibration absorber is capable of self-adjustment to the optimal damping location in order to achieve balance and, thereby, optimize damping effects. The proposed device includes a groove under the damping target with inertial mass hung from a coil spring beneath. This allows the device to bounce vertically or rotate in order to reduce vibrations in the main body. The coil spring vibration absorber can also slide along the groove in order to adjust its location continuously until the vibrations in the system are minimized and the main body is balanced. Experiments verify the efficacy of the proposed device in improving damping performance beyond what has been achieved using conventional devices. We also provide an explanation of the theoretical underpinnings of the design as well as the implications of these findings with regard to future developments.

Highlights

Vibration can affect the stability of a structure, and constant vibration can lead to fatigue and structural damage
The vibration absorber is situated on the X-axis of the main body; it is clear that vibration absorber produces better damping effects at the far-fromforce point in all the DOFs except θX
This study investigated the damping effects of vibration absorbers equipped with three different sliders on grooves in three different directions, using two force application points

Summary

Introduction

Vibration can affect the stability of a structure, and constant vibration can lead to fatigue and structural damage. Babitsky and Veprik [1] studied vibration suppression from the perspective of balance using an elastic beam with a sliding washer damping system. Their results proved that this type of self-damping system is capable of eliminating resonance and decreasing beam vibration. Lu and Hung [4] proposed the balancing of components using two or three balls Their approach proved to be three times more effective than using a single-ball balancer system. Based on these achievements, this study sought to extend the application of free-moving components in vibrating rigid bodies for the elimination of vibration

Objectives

Results

Conclusion