716 可変摩擦ダンパによる受動型振動絶縁装置

概要

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In order to protect precise machineries from external vibration, various types of vibration isolation system have been investigated by many researchers. For the passive isolation system, a friction damper is often used because it is simple, inexpensive and reliable. However, the ordinary friction damper of constant friction force has the performance limitation, because the isolation characteristic declines when the friction force is large, while resonant peak becomes large when the friction force is small. Furthermore, the displacement remains apart from the equilibrium position after the vibration disappeared. These characteristics are disadvantageous when position recovery is required. In order to overcome above drawbacks of the ordinary friction damper, a new type of friction damper is proposed in this paper. In the new friction damper, the friction lever mechanism is devised to make the magnitude of the friction force proportional to the relative displacement. This is achieved by connecting the end of the lever to the restoring spring.
一般社団法人日本機械学会の論文
2003-09-16