472 機能性流体の質量移動を利用したダンパの研究

概要

論文の詳細を見る
In previous paper authors proposed a vibration suppression device that utilizes inertia mass by fluid in order to obtain effects of vibration cut-off or suppression. The liquid inertia mass is occurred by a relative movement of the fluid in a by-pass pipe during excitation, and influenced by a compression ratio of a diameter and a weight ratio of the fluid. The test damper was manufactured, and resisting force characteristics using water were investigated experimentally. In this paper, magneto-rheological fluid is used instead of water. The inertia force is larger than that of water since it is proportional to the density, and controllable as adjusting magnetic flux density. It is clarified from results that variable inertia force can be derived in several cases of magnets attached. In order to confirm the effect of vibration suppression, tests of frequency response and seismic response of one degree of freedom system with the test damper in case of water are carried out. Transmissibility can be isolated from input excitation, and resonance frequency can be shifted toward low frequency by the inertia mass. Vibration suppressions of the damper are confirmed quantitatively.
一般社団法人日本機械学会の論文
2009-08-03