319 流体の質量効果を用いた振動遮断方法に関する研究

概要

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In this paper, the authors propose a Cut-off System of the vibration which is similar to a dynamic damper or active mass damper, but nevertheless is quite different. The system described in this paper is installed between the base and the main mass of a structure that is to be protected from undesirable vibration due to a strong motion earthquake. A liquid (water and/or other functional fluid) eliminates the vibration similar to a dead mass or a controllable mass. From the theoretical study that is presented, it is clarified that 1) the cut-off frequency depends on the liquid mass, 2) diameter of the orifice regulation of the flow has an important function, and 3) transmissibility between the base and the main mass is appreciably reduced. Numerical simulation is carried out and a simple laboratory experiment is described and analyzed.
一般社団法人日本機械学会の論文
2005-08-22