Transactions of the Society of Information Storage Systems (정보저장시스템학회논문집)
- Volume 2 Issue 3
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- Pages.201-207
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- 2006
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- 1738-6845(pISSN)
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- 2288-2022(eISSN)
A Study on the Behavior of a Spinning Flexible Disk near a Curved Wall
곡률이 있는 벽면근처에서 고속회전하는 유연디스크의 거동 해석
Abstract
Information storage devices have been studied to increase the storage capacity and the data transfer rate as well as to decrease the access time and their physical sizes. Optical information storage devices have been achieved high-capacity by reducing optical spot size remarkably due to the development of Blue-ray technology. Optical information storage devices usually use 1.2mm-thick polycarbonate(PC) media to get high enough stiffness. However, it would be better if we can decrease the thickness of a disk for achieving thinner device while keeping the capacity as large as possible. Decreasing the thickness of the storage media makes it difficult to read and write data because it increases the transverse vibration of the rotating disk due to the interaction with surrounding air and the vibration characteristics of thin flexible disk itself, Therefore, a special design based on the fluid mechanics is required to suppress the transverse vibration of the disk in non-contact manner so that the optical pickup can read/write data successfully. In this study, a curved wall is proposed as a stabilizer to suppress the transverse vibration of a