インパクトダンパによる自励振動の防振

概要

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This paper deals with the problem of quenching self-excited vibrations by an impact damper composed of a ball and impact walls. The Runge-Kutta-Gill method with variable time division is applied to the numerical analysis of the self-excited system of Rayleigh's type. The solutions obtained from this method are divided into two main categories, that is, periodic solutions and chaos. Furthermore, two types of chaos are determined, namely, chaos after period doubling bifurcation and intermittency. An optimum approach for quenching of the self-excited vibration was discussed. As a result, it was clarified that for the optimum design of the impact damper there existed a certain relation between coefficient of restitution and clearance. An experiment was performed in order to quench vortex induced vibration by the impact damper. The experimental results agreed well qualitatively with those from the numerical computational analysis.
一般社団法人日本機械学会の論文
1994-01-25