Simulation and Vibration Analysis of Multi-Stack Computer Disks

• Main Authors: Chen Hsueh-Ying, 陳學穎
• Other Authors: Huang S. C.
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/29926373774859124086

碩士 === 國立臺灣科技大學 === 機械工程系 === 92 === In this paper, simulation and vibration analysis of multi-stacks computer disks discussed via receptance method. The equation of motion of a spinning plate is first derived from the energy principle. The Galerkin’s method is then employed for an approximate solution of the spinning plate. The receptance method follows to join the spinning plates(discs) and the springs(stiffness of read/write head and cantilever), and obtain the natural frequencies and mode shapes of multi-stacks disks system. The numerical solutions demonstrated in this paper are for from three to five disks. The paper also discusses effects of parameters(plates number, stiffness of spring, connection position of spring and rotating speeds). According to the results, the multi-disks system’s natural frequencies increase with the stiffness of spring. Besides, the natural modes occur mode exchange phenomena as the system is strongly coupled. These phenomena are illustrated in various figures, and they are explained form both physical and mathematical points of view.