Monte Carlo simulation of the manufacturing tolerance in FDBs to identify the sensitive design variables affecting the performance of a disk-spindle system

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• 作者：Jihoon Lee ; Minho Lee ; Kyobong Kim ; Chiho Kang ; Hokyung Jang…
• 刊名：Microsystem Technologies
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：21
• 期：12
• 页码：2649-2656
• 全文大小：2,882 KB
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  Jang GH, Lee SH, Kim HW (2006) Finite element analysis of the coupled journal and thrust bearing in a computer hard disk drive. J Tribol 128:335-40CrossRef
  Kim MG, Jang GH, Kim HW (2010) Stability analysis of a disk-spindle system supported by coupled journal and thrust bearings considering five degrees of freedom. Tribol Int 43:1479-490CrossRef
  Kim MG, Jang GH, Lee JH (2011) Robust design of a HDD spindle system supported by fluid dynamic bearings utilizing the stability analysis. Microsyst Technol 17:761-70CrossRef
  Koak KY, Jang GH, Kim HW (2009a) Whirling, tilting and axial motions of a HDD spindle system due to the manufacturing errors of FDBs. Microsyst Technol 15:1701-709CrossRef
  Koak KY, Kim HW, Jung KM, Jang GH (2009b) Dynamic characteristics of a HDD spindle system due to imperfect shaft roundness. IEEE Trans Magn 45:5148-151CrossRef
  Lee JH, Jang GH, Jung KM (2013) Optimal design of fluid dynamic bearings to develop a robust disk-spindle system in a hard disk drive utilizing modal analysis. Microsyst Technol 19:1495-504CrossRef
  Lee JH, Lee MH, Jang GH (2014) Effect of an hourglass-shaped sleeve on the performance of the fluid dynamic bearings of a HDD spindle motor. Microsyst Technol 20:1435-445CrossRef
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• 作者单位：Jihoon Lee (1)
  Minho Lee (1)
  Kyobong Kim (1)
  Chiho Kang (1)
  Hokyung Jang (1)
  Gunhee Jang (1)
  
  1. PREM, Department of Mechanical Convergence Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul, 133-791, Republic of Korea
  
• 刊物类别：Engineering
• 刊物主题：Electronics, Microelectronics and Instrumentation
  Nanotechnology
  Mechanical Engineering
  Operating Procedures and Materials Treatment
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-1858

文摘

This research proposes the Monte Carlo simulation for manufacturing tolerances in major design variables of fluid dynamic bearings (FDBs) to identify their sensitive design variables on the performance of FDBs and the dynamic performance of a disk-spindle system. Friction torque and critical mass were chosen as the performance indexes of FDBs and the disk-spindle system. The proposed method was applied to the FDBs of a 2.5-HDD, and the Monte Carlo simulation was performed for 16 major design variables of the FDBs. The clearance of the journal bearing was the most sensitive design variable of both the friction torque and critical mass. Additionally the groove to groove and ridge ratio and groove depth of the grooved journal bearing, which were manufactured by electrochemical machining, were also sensitive to determining the friction torque and critical mass of the FDBs, respectively. This research can be utilized to manage the manufacturing tolerance of FDBs to maintain consistent performance of FDBs and a disk-spindle system in an HDD.