Study of dynamic vibration absorber using 3-directional resiliently and viscously supported mass

Abstract

A 3-Directionally Supported Dynamic Vibration Absorber（called 3DSDVA in this report）has been developed in this study. The 3DSDVA, which is consists of viscoelastic supported an iron cube auxiliary mass with circular low hardness rubbers, can vibrate in multiple directions. By compressing the rubbers, the supporting rigidity of the auxiliary mass is increased, and the natural frequency of the 3DSDVA can be adjusted. The natural frequency adjustment mechanism was confirmed by the excitation test in the vertical direction. In order to examine the damping ability of the 3DSDVA, an excitation test was conducted using a 1:10 scale railway under frame model. As a result of the test, a large vibration reduction effect has been observed successfully.