References
- 4th ICMF 性流體のベナ-ル對流に及ぼす磁場の影響について實驗的硏究 Schwab-Stierstsadt
- 4th ICMF 磁性流體の熱傳導率の側定に關する硏究 Popplewell-Qenale
- 日本機械學會論文集 v.57 no.544 島田邦雄;神山新一
- 日本機械學會論文集 v.59 no.567 島田邦雄;神山新一
The aim this study is to provide fundamental informations for the development of magneticfluid damper. To achieve the aim. the damping effect of magneticfluid is investigated by experiments that the diameter of inner circular bar and the input amplitude vary in the magnetic field generated by the permanent magnet and the electromagnet. From the study, the following conclusive remarks can be made. As the diameter of inner circular bar and the input amplitude increase. the damping effect is improved. And we can know that as the contact area between inner circular bar and magneticfluid increases, damping ratio is improved. Also we consider the cases that there is magnetism generated by electromagnet and DC voltage is supplied to electromagnet from 10V to 50V by 10V. In these cases, the amplitude ratio decreases sharply from 1.8 1.0 And for these cases, the damping ratio is .745.