磁気ディスク装置内圧力計測による流体起因ディスクフラッタダイナミクスに関する研究(S62-3 HDI(1),S62 情報機器コンピュータメカニクス)

概要

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We have studied flow induced flutter vibration of co-rotating two disks by using LDV. It is found that the arm which is inserted between two disks suppresses the disk flutter vibration. In addition, we have also measured pressure distribution as well as air flow velocity between two disks. From the experimental results, it is found that the mean flow velocity and its fluctuation decreases, while the mean pressure increases and its fluctuation decreases, when the arm is inserted between two disks. Therefore, it is suggested that there is the correlation between the disk flutter vibration and the pressure fluctuation between two disks, and the disk flutter can be suppressed by inserting the arm or spoiler that decreases the pressure fluctuation between two disks.
2004-09-04