Influence of the base of vibration absorber on vibration attenuation effect

When the vibration absorber is applied to attenuate the vibration of flexible structures,the influence caused by the base of the vibration absorber cannot be ignored. In order to understand the characteristics of the influence,a mathematical model of the system composed of the vibration absorber with the base and a clamped-clamped beam was established. With the model,the vibration attenuation effects of the vibration absorbers were analysed by using the target criterion of power flow and vibration magnitude. The performances caused by the location,size,mass and the number of connection points were investigated emphatically. The results show that the vibration attenuation effect and the effective frequency range of the vibration absorber can be improved by optimizing the base.